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Is Santa Monica Tap Water Safe to Drink?

Yes! Generally Safe to Drink*

LAST UPDATED: 7:47 pm, August 3, 2022
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Table of Contents

Can You Drink Tap Water in Santa Monica?

Yes, Santa Monica's tap water is generally considered safe to drink as Santa Monica has no active health based violations of the Safe Drinking Water Act (SDWA) that we are aware of. Other factors such as lead piping in a home, or low levels of pollutants on immunocompromised individuals, should also be considered, however. To find more recent info we might have, you can check out our boil water notice page or the city's water provider website.

According the EPA’s ECHO database, from April 30, 2019 to June 30, 2022, Santa Monica's water utility, Santa Monica-City, Water Division, had 0 violations of the Safe Drinking Water Act. For more details on the violations, please see our violation history section below. This assessment is based on the Santa Monica-City, Water Division water system, other water systems in the city may have different results.

While tap water that meets the EPA health guidelines generally won’t make you sick to your stomach, it can still contain regulated and unregulated contaminants present in trace amounts that could potentially cause health issues over the long-run. These trace contaminants may also impact immunocompromised and vulnerable individuals.

The EPA is reviewing if it’s current regulations around pollutant levels in tap water are strict enough, and the health dangers posed by unregulated pollutants, like PFAS.

Water Quality Report for Santa Monica Tap Water

The most recent publicly available numbers for measured contaminant levels in Santa Monica tap water are in its 2020 Water Quality Report. As you can see, there are levels which the EPA considers to be acceptable, but being below the maximum allowable level doesn’t necessarily mean the water is healthy.

Lead in tap water, for example, is currently allowed at up to 15ppb by the EPA, but it has set the ideal goal for lead at zero. This highlights how meeting EPA standards doesn’t necessarily mean local tap water is healthy.

EPA regulations continue to change as it evaluates the long term impacts of chemicals and updates drinking water acceptable levels. The rules around arsenic, as well as, lead and copper are currently being re-evaluated.

There are also a number of "emerging" contaminants that are not currently. For example, PFAS (Per- and polyfluoroalkyl substances), for which the EPA has issued a health advisory. PFAS are called "forever chemicals" since they tend not to break down in the environment or the human body and can accumulate over time.

We recommend looking at the contaminants present in Santa Monica's water quality reports, or getting your home's tap water tested to see if you should be filtering your water.

Santa Monica Tap Water Safe Drinking Water Act Violation History - Prior 10 Years

Below is a ten year history of violations for the water system named Santa Monica-City, Water Division for Santa Monica in California. For more details please see the "What do these Violations Mean?" section below.

Is there Lead in Santa Monica Water?

Based on the EPA’s ECHO Database, 90% of the samples taken from the Santa Monica water system, Santa Monica-City, Water Division, between sample start date and sample end date, were at or below, 0.0023 mg/L of lead in Santa Monica water. This is 15.3% of the 0.015 mg/L action level. This means 10% of the samples taken from Santa Monica contained more lead.

While Santa Monica water testing may have found 0.0023 mg/L of lead in its water, that does not mean your water source has the same amount. The amount of lead in water in a city can vary greatly from neighborhood to neighborhood, or even building to building. Many buildings, particularly older ones, have lead pipes or service lines which can be a source of contamination. To find out if your home has lead, we recommend getting you water tested.

No amount of lead in water is healthy, only less dangerous. As lead accumulates in our bodies over time, even exposure to relatively small amounts can have negative health effects. For more information, please check out our Lead FAQ page.

Are there PFAS in Santa Monica Tap Water?

Currently, testing tap water for PFAS isn’t mandated on a national level. We do have a list of military bases where there have been suspected or confirmed leaks. There appears to be at least one military base - DFSP San Pedro - near Santa Monica with suspected leaks.

With many potential sources of PFAS in tap water across the US, the best information we currently have about which cities have PFAS in their water is this ewg map, which you can check to see if Santa Monica has been evaluated for yet.

Our stance is better safe than sorry, and that it makes sense to try to purify the tap water just in case.

What do these Violations Mean?

Safe Drinking Water Act Violations categories split into two groups, health based, and non-health based. Generally, health based violations are more serious, though non-health based violations can also be cause for concern.

Health Based Violations

  1. Maximum contaminant levels (MCLs) - maximum allowed contaminant level was exceeded.
  2. Maximum residual disinfectant levels (MRDLs) - maximum allowed disinfectant level was exceeded.
  3. Other violations (Other) - the exact required process to reduce the amounts of contaminants in drinking water was not followed.

Non-Health Based Violations

  1. Monitoring and reporting violations (MR, MON) - failure to conduct the required regular monitoring of drinking water quality, and/or to submit monitoring results on time.
  2. Public notice violations (Other) - failure to immediately alert consumers if there is a serious problem with their drinking water that may pose a risk to public health.
  3. Other violations (Other) - miscellaneous violations, such as failure to issue annual consumer confidence reports or maintain required records.

SDWA Table Key

Field Description
Compliance Period Dates of the compliance period.
Status Current status of the violation.
  • Resolved - The violation has at least one resolving enforcement action. In SDWIS, this indicates that either the system has returned to compliance from the violation, the rule that was violated was no longer applicable, or no further action was needed.
  • Archived - The violation is not Resolved, but is more than five years past its compliance period end date. In keeping with the Enforcement Response Policy, the violation no longer contributes to the public water system's overall compliance status. Unresolved violations are also marked as Archived when a system ceases operations (becomes inactive).
  • Addressed - The violation is not Resolved or Archived, and is addressed by one or more formal enforcement actions.
  • Unaddressed - The violation is not Resolved or Archived, and has not been addressed by formal enforcement.
show details
Health-Based? Whether the violation is health based.
Category Code
The category of violation that is reported.
  • TT - Treatment Technique Violation
  • MRDL - Maximum Residual Disinfectant Level
  • Other - Other Violation
  • MCL - Maximum Contaminant Level Violation
  • MR - Monitoring and Reporting
  • MON - Monitoring Violation
  • RPT - Reporting Violation
show details
Code A full description of violation codes can be accessed in the SDWA_REF_CODE_VALUES (CSV) table.
Contaminant Code A code value that represents a contaminant for which a public water system has incurred a violation of a primary drinking water regulation.
Rule Code Code for a National Drinking Water rule.
  • 110 - Total Coliform Rule
  • 121 - Surface Water Treatment Rule
  • 122 - Long Term 1 Enhanced Surface Water Treatment Rule
  • 123 - Long Term 2 Enhanced Surface Water Treatment Rule
  • 130 - Filter Backwash Rule
  • 140 - Ground Water Rule
  • 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule
  • 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule
  • 230 - Total Trihalomethanes
  • 310 - Volatile Organic Chemicals
  • 331 - Nitrates
  • 332 - Arsenic
  • 333 - Inorganic Chemicals
  • 320 - Synthetic Organic Chemicals
  • 340 - Radionuclides
  • 350 - Lead and Copper Rule
  • 410 - Public Notice Rule
  • 420 - Consumer Confidence Rule
  • 430 - Miscellaneous
  • 500 - Not Regulated
  • 111 - Revised Total Coliform Rule
show details
Rule Group Code Code that uniquely identifies a rule group.
  • 120 - Surface Water Treatment Rules
  • 130 - Filter Backwash Rule
  • 140 - Groundwater Rule
  • 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule
  • 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule
  • 230 - Total Trihalomethanes
  • 310 - Volatile Organic Chemicals
  • 320 - Synthetic Organic Chemicals
  • 330 - Inorganic Chemicals
  • 340 - Radionuclides
  • 350 - Lead and Copper Rule
  • 400 - Other
  • 500 - Not Regulated
  • 110 - Total Coliform Rules
  • 410 - Public Notice Rule
  • 420 - Consumer Confidence Rule
  • 430 - Miscellaneous
show details
Rule Family Code Code for rule family.
  • 100 - Microbials
  • 200 - Disinfectants and Disinfection Byproducts Rule
  • 300 - Chemicals
  • 400 - Other
  • 500 - Not Regulated
show details

For more clarification please visit the EPA's data dictionary.

Santa Monica Water - Frequently Asked Questions

WHAT AFFECTS THE TASTE OF MY WATER?
The taste of drinking water is affected by its mineral content as well as the presence of chloramine, which is used to protect against potential bacterial contamination. Sometimes plumbing can cause a metallic flavor, especially if the water has been sitting in the pipes for many hours. The water delivered to our customers has an average hardness of 163 ppm. To convert to grains per gallon, divide the hardness in ppm by 17.1. The average hardness in our water is 9.47 grains per gallon. A low level of chloramine disinfectant is added to your tap water to protect from waterborne pathogens. Chloramine is formed when a small amount of ammonia is added to chlorinated water. This type of disinfectant is very stable and reduces the formation of disinfection by-products in your water. These by-products are an unintended consequence of the disinfection process but are far below the allowable limit in Santa Monica water. We carefully monitor the amount of the chloramine disinfectant to protect the quality of your water. The City of Santa Monica is required by state law to add fluoride to drinking water to help prevent dental decay in consumers. Current regulations require fluoride levels in the treated water be maintained between 0.6 to 1.2 ppm with an optimum dose of 0.7 ppm. Our monitoring showed that fluoride levels in the treated water distribution system averaged 0.74 ppm. According to the American Dental Association and CDC, it is safe to use optimally fluoridated water for preparing infant formula. If an infant is primarily fed infant formula prepared with fluoridated water, there may be an increased chance for mild enamel fluorosis, but enamel fluorosis does not affect the health of the infant or the health of the infant’s teeth. To lessen this chance, deionized, purified, distilled or demineralized bottled water can be used. If you have additional questions about fluoride, contact your health provider. Additional information can be found at the State Board website: www.waterboards.ca.gov/drinking_water/ certlic/drinkingwater/Fluoridation.shtml or the CDC website: www.cdc.gov/fluoridation The lead contamination that made the news in Flint, Michigan is highly unlikely in Santa Monica. The quality of
HOW HARD IS MY WATER?
The water delivered to our customers has an average hardness of 163 ppm. To convert to grains per gallon, divide the hardness in ppm by 17.1. The average hardness in our water is 9.47 grains per gallon. A low level of chloramine disinfectant is added to your tap water to protect from waterborne pathogens. Chloramine is formed when a small amount of ammonia is added to chlorinated water. This type of disinfectant is very stable and reduces the formation of disinfection by-products in your water. These by-products are an unintended consequence of the disinfection process but are far below the allowable limit in Santa Monica water. We carefully monitor the amount of the chloramine disinfectant to protect the quality of your water. The City of Santa Monica is required by state law to add fluoride to drinking water to help prevent dental decay in consumers. Current regulations require fluoride levels in the treated water be maintained between 0.6 to 1.2 ppm with an optimum dose of 0.7 ppm. Our monitoring showed that fluoride levels in the treated water distribution system averaged 0.74 ppm. According to the American Dental Association and CDC, it is safe to use optimally fluoridated water for preparing infant formula. If an infant is primarily fed infant formula prepared with fluoridated water, there may be an increased chance for mild enamel fluorosis, but enamel fluorosis does not affect the health of the infant or the health of the infant’s teeth. To lessen this chance, deionized, purified, distilled or demineralized bottled water can be used. If you have additional questions about fluoride, contact your health provider. Additional information can be found at the State Board website: www.waterboards.ca.gov/drinking_water/ certlic/drinkingwater/Fluoridation.shtml or the CDC website: www.cdc.gov/fluoridation The lead contamination that made the news in Flint, Michigan is highly unlikely in Santa Monica. The quality of
WHAT TYPE OF DISINFECTANT IS IN MY WATER?
A low level of chloramine disinfectant is added to your tap water to protect from waterborne pathogens. Chloramine is formed when a small amount of ammonia is added to chlorinated water. This type of disinfectant is very stable and reduces the formation of disinfection by-products in your water. These by-products are an unintended consequence of the disinfection process but are far below the allowable limit in Santa Monica water. We carefully monitor the amount of the chloramine disinfectant to protect the quality of your water. The City of Santa Monica is required by state law to add fluoride to drinking water to help prevent dental decay in consumers. Current regulations require fluoride levels in the treated water be maintained between 0.6 to 1.2 ppm with an optimum dose of 0.7 ppm. Our monitoring showed that fluoride levels in the treated water distribution system averaged 0.74 ppm. According to the American Dental Association and CDC, it is safe to use optimally fluoridated water for preparing infant formula. If an infant is primarily fed infant formula prepared with fluoridated water, there may be an increased chance for mild enamel fluorosis, but enamel fluorosis does not affect the health of the infant or the health of the infant’s teeth. To lessen this chance, deionized, purified, distilled or demineralized bottled water can be used. If you have additional questions about fluoride, contact your health provider. Additional information can be found at the State Board website: www.waterboards.ca.gov/drinking_water/ certlic/drinkingwater/Fluoridation.shtml or the CDC website: www.cdc.gov/fluoridation The lead contamination that made the news in Flint, Michigan is highly unlikely in Santa Monica. The quality of
IS THE CITY’S WATER FLUORIDATED?
The City of Santa Monica is required by state law to add fluoride to drinking water to help prevent dental decay in consumers. Current regulations require fluoride levels in the treated water be maintained between 0.6 to 1.2 ppm with an optimum dose of 0.7 ppm. Our monitoring showed that fluoride levels in the treated water distribution system averaged 0.74 ppm. According to the American Dental Association and CDC, it is safe to use optimally fluoridated water for preparing infant formula. If an infant is primarily fed infant formula prepared with fluoridated water, there may be an increased chance for mild enamel fluorosis, but enamel fluorosis does not affect the health of the infant or the health of the infant’s teeth. To lessen this chance, deionized, purified, distilled or demineralized bottled water can be used. If you have additional questions about fluoride, contact your health provider. Additional information can be found at the State Board website: www.waterboards.ca.gov/drinking_water/ certlic/drinkingwater/Fluoridation.shtml or the CDC website: www.cdc.gov/fluoridation The lead contamination that made the news in Flint, Michigan is highly unlikely in Santa Monica. The quality of
WHAT ABOUT LEAD FROM MY PLUMBING?
The lead contamination that made the news in Flint, Michigan is highly unlikely in Santa Monica. The quality of
DO I REALLY NEED TO BUY A WATER FILTER OR HOME TREATMENT SYSTEM?
The decision to buy a water filter or home treatment system is a matter of personal preference. Our water meets or exceeds rigid state and federal health standards. If you decide to buy a filter or system, be a smart shopper and do some homework. Any treatment device you buy should be registered with the National Sanitation Foundation (NSF). Contact NSF toll free at (800) 673-6275 or visit www.nsf.org. Again, the decision is yours. You may find that keeping a pitcher of tap water in your refrigerator is a low-cost, water-thrifty alternative to buying more expensive bottled water, and it’s far better for the environment. Even when the bottle is reused or recycled, the petrochemicals used in creating the bottle and the transportation of the water have a significant impact on the environment.
WHAT ABOUT BOTTLED WATER?
Again, the decision is yours. You may find that keeping a pitcher of tap water in your refrigerator is a low-cost, water-thrifty alternative to buying more expensive bottled water, and it’s far better for the environment. Even when the bottle is reused or recycled, the petrochemicals used in creating the bottle and the transportation of the water have a significant impact on the environment.
HOW DO I CONTACT SANTA MONICA CUSTOMER SERVICE?
To contact customer service for the Santa Monica water provider, Santa Monica-City, Water Division, please use the information below.
By Phone: 310-458-5688
By Email: sunny.wang@smgov.net
By Mail: 1212 5TH STREET
SANTA MONICA, CA, 90401
HOW TO PAY BILL FOR SANTA MONICA-CITY, WATER DIVISION
Already have an account?

Existing customers can login to their Santa Monica-City, Water Division account to pay their Santa Monica water bill by clicking here.

Want to create a new account?

If you want to pay your Santa Monica-City, Water Division bill online and haven't made an account yet, you can create an account online. Please click here to create your account to pay your Santa Monica water bill.

Want to pay without an account?

If you don't want to make an account, or can't remember your account, you can make a one-time payment towards your Santa Monica water bill without creating an account using a one time payment portal with your account number and credit or debit card. Click here to make a one time payment.

HOW TO START & STOP SANTA MONICA WATER SERVICE
Starting Your Service

Moving to a new house or apartment in Santa Monica means you will often need to put the water in your name with Santa Monica-City, Water Division. In order to put the water in your name, please click the link to the start service form below. Start service requests for water bills typically take two business days.

Start Service Form

Want to create a new account?

Leaving your house or apartment in Santa Monica means you will likely need to take your name off of the water bill with Santa Monica-City, Water Division. In order to take your name off the water bill, please click the link to the stop service form below. Stop service for water bills requests typically take two business days.

Stop Service Form

The estimated price of bottled water

$2.07 in USD (1.5-liter)

USER SUBMITTED RATINGS

Santa Monica tap water
  • Drinking Water Pollution and Inaccessibility 33% Low
  • Water Pollution 54% Moderate
  • Drinking Water Quality and Accessibility 67% High
  • Water Quality 46% Moderate

The above data is comprised of subjective, user submitted opinions about the water quality and pollution in Santa Monica, measured on a scale from 0% (lowest) to 100% (highest).

Related FAQS

Santa Monica Water Quality Report (Consumer Confidence Report)

The EPA mandates that towns and cities consistently monitor and test their tap water. They must report their findings in an annual Consumer Confidence Report. Below is the most recent water quality report from Santa Monica's Water. If you would like to see the original version of the report, please click here.

Water Resources Division

2021 Annual

Water Quality

Report

Conserving Our Most Precious Resource...Water.

TO DOWNLOAD THIS REPORT, VISIT

WATERQUALITY. SMGOV. NET

Dear Community Members,

The City of Santa Monica is committed to providing safe and clean drinking water to our residents. On behalf of the City, I am pleased to present this Annual Drinking Water Quality Report which provides a summary of water quality data for 2020, and report that Santa Monica water once again met or exceeded all state and federal drinking water standards.

The City’s Water Resources Division objective is to continue providing sustainable, clean and healthy drinking water for its residents today and for the future. Throughout the year, our staff works to provide and maintain high-quality drinking water and continues to ensure that the community has reliable service even in difficult times, such as the COVID-19 pandemic. Reliable water supply and maintaining service continuity are critical during this pandemic. Therefore, we are committed to continuing to take additional precautionary measures in response to the pandemic to ensure that the city’s water supply is not affected.

In addition to ensuring safe and clean water, we are also devoted to meeting your water needs in the face of climate change. Water conservation has been

a priority for the city and has done an amazing job conserving water and decreasing our reliance on imported water. To ensure reliable water delivery to our residents, we continue to invest in the City’s water system to prevent infrastructure failures and have a diversified drought resilient water supply portfolio. On behalf of the City of Santa Monica Public Works Department and the employees of the Water Resources Division, thank you for allowing us to serve you.

Sincerely,

Sunny Wang

Water Resources Manager

The City of Santa Monica Water Resources Division values transparency, we hope that you find this report clear and easy to understand. If you have any questions, please call us at (310) 434-2672.

El Departamento de Recursos de Agua de la ciudad de Santa Monica valora una gestión transparente; por consiguiente, esperamos que encuentre este informe claro y fácil de entender. Si usted tiene alguna pregunta, por favor comuníquese al (310) 434-2672.

Santa Monica’s Water Source And Treatment System

The City of Santa Monica currently obtains up to 75% of its water from local groundwater wells within the City and in West Los Angeles. The City extracts its water from three sub-basins within the Santa Monica Basin (Charnock, Olympic, and Arcadia Sub-basins), with the Charnock Sub-basin being a local supply since 1924.

Charnock Well Field and Charnock Treatment Plant

Over 20 years ago, Methyl tert-Butyl Ether (MTBE and Tert-Butyl Alcohol (TBA), compounds once used as gasoline additives, were detected in three of the Charnock Sub-basin wells. These contaminants found their way into the groundwater via Leaking Underground Storage Tanks from various gasoline stations within the Charnock Sub-basin. In response, the City of Santa Monica established the Charnock Well Field Restoration Project. The treatment from this project uses virgin Granular Activated Carbon (GAC) filtration, from coconut shells, to successfully treat MTBE and TBA concentrations to levels well below the Maximum Contaminant Level (MCL) of 5 ppb.

TO PUT THESE UNITS INTO CONTEXT:

• One part per billion (ppb) = 1 second in 31.7 years

    • 1 teaspoon in 1.3 million gallons
  • One part per million (ppm) = 1 second in 11.6 days
    • 1 teaspoon in 1,302 gallons

The treated water from the Charnock Well Field is then sent to the Arcadia Treatment Plant, and along the way it blends with water from the Olympic and Arcadia Sub-basin wells. Once the water arrives at the Arcadia Treatment Plant, it undergoes a treatment process that includes Iron/Manganese removal, filtration, Reverse Osmosis (RO) softening, aeration, disinfection, and fluoridation.

Softening is the process of removing scale-forming calcium and magnesium from hard water.

SANTA MONICA WATER TREATMENT PROCESS

Charnock Well Field

Greensand Filtration

GAC Filtration

Pump to

Charnock Wells Groundwater

The well water is filtered

The MTBE is removed by

Treatment Plant

contaminated with the

through greensand media

filtering through

The filtered water is combined

gasoline additive MTBE is

to remove iron and

Granular Activated Carbon

with the flow of other wells and

pumped up from 400 feet

manganese which would

(GAC) filters.

pumped to the Santa Monica

below ground surface.

foul the carbon filters.

 

 

Water Treatment Plant.

 

 

 

Santa Monica

Water Treatment

Plant

Pretreatment

To protect the sensitive Reverse Osmosis (RO) filters, the combined well flow is filtered again through greensand and cartridge filters to remove more

iron, manganese and any remaining sediment.

REVERSE OSMOSIS FILTRATION

Water Quality

Adjustments

The mineral content is adjusted to the desired softness. The pH is adjusted, fluoride is added and the water undergoes final disinfection

with chloramine.

Reverse Osmosis Filtration

Filtration through a three-stage Reverse Osmosis

(RO) membrane system softens the water by removing minerals (calcium and magnesium). Reverse Osmosis uses pressure to force water through membranes with pores so small the minerals can’t pass through.

Aeration and Storage

The final step, aeration, uses the existing

4 air stripping technology in the five million gallon reservoir to remove any remaining volatile

groundwater contaminants

such as trichloroethene.

Final Delivery

Santa Monica residents and businesses receive water for everyday use. Water conservation by end users is key to ensuring water reliability and sustainability.

Reverse Osmosis performs softening by forcing hard water through membranes with very small pores, sized from 0.0001 - 0.001 micrometers. The complete treatment process is further outlined on the following pages.

The remaining 25% of Santa Monica’s drinking water is purchased from Metropolitan Water District (MWD). Treated MWD water is blended with our locally produced water, and then distributed to our residents. MWD imports water from two separate sources. One is the Colorado River water, which is delivered from Lake Havasu through a 242-mile-long aqueduct and originates as snowmelt from mountainous regions in Utah, Wyoming, and Colorado. The second is from the State Water Project, which is delivered through the 441-mile-long California Aqueduct and originates in the Sacramento-San Joaquin Delta. MWD water is filtered at their treatment plants and undergoes extensive treatment before entering Santa Monica’s water system. For more information about the City’s treatment facilities, please call the Water Resources Division (see back cover for contact information).

Background on

Drinking Water Contaminants

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source water include:

  • Microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
  • Inorganic contaminants, such as salts and metals, that can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.**
  • Pesticides and herbicides that may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
  • Organic chemical contaminants, including synthetic and volatile organic chemicals, that are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, agricultural application, and septic systems.
  • Radioactive contaminants, that can be naturally- occurring or be the result of oil and gas production and mining activities.

Photo of the California Aqueduct by the Department of Water Resources.

In order to ensure that tap water is safe to drink, the U.S. Environmental Protection Agency (U.S. EPA) and the California State Water Resources Control Board (State Board) prescribe regulations that limit the concentration of certain contaminants in water provided by public water systems. State Board regulations also establish limits for contaminants in bottled water that provide the same protection for public health.

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the U.S. EPA’s Safe Drinking Water Hotline (800) 426-4791.

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno- compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly people, and infants can be particularly at risk of infections. These people should seek advice about drinking water from their health

care providers. U.S. EPA and Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (800) 426-4791.

You can help protect source water purity by controlling what enters storm drains. The following sites provide guides on how you can protect Drinking Water Sources: www.epa.gov/sourcewaterprotection/easy-things-you- can-do-protect-drinking-water-sources

Information on environmentally friendly products is available at www.sustainablesm.org/buygreen

To report storm drain pollution, please contact the City’s Wastewater Department. See back cover for contact information.

Source Water Vulnerability Assessments

Between 2000 and 2012, the California State Water Resources Control Board, Division of Drinking Water (DDW) completed Source Water Vulnerability Assessments for all the City’s groundwater wells. The assessments are required for all water utilities nationwide to evaluate the vulnerability of drinking water sources for “possible contaminating activities.” Vulnerabilities most commonly associated with contamination include commercial, industrial, urban runoff and municipal activities. Based on the vulnerability assessments, Santa Monica Wells #3 and #4 located mid-city, Arcadia Wells #4 and #5, and Charnock Wells #13, #16, #18, #19 and #20, located in West L.A. are considered most vulnerable to commercial, industrial, residential, and municipal activities. Santa Monica Well #1, located on the north side of the city, Wells #3 and #4, and the Arcadia Wells are considered most vulnerable by their proximity to sewer collection systems, although monthly analyses have detected no related contamination. For more information, please contact the Water Resources Division.

In March and June 2012, MWD completed a source water assessment of its Colorado and State Project supplies. Based upon the vulnerability assessments, the Colorado River and State Project supplies are most vulnerable to contamination resulting from recreation, urban/storm water runoff, increasing urbanization in the watershed, and wastewater. A copy of the assessment can be obtained by contacting MWD (see back cover for contact information).

Ensuring the Quality of Santa Monica’s Water Supply

Permission and oversight to operate a community water system is granted annually by the DDW and the US EPA. Santa Monica’s water supply undergoes constant field and laboratory testing to ensure the highest water quality before reaching your tap. The water is sampled and analyzed daily, weekly, monthly, quarterly, semi- annual, annual, and triennial. In addition, our water quality management practice includes operating and maintaining optimum performance of the source wells, treatment plants, distribution system; managing reservoirs to meet demand; and testing the water at over 100 locations throughout City’s distribution system monthly.

We look for more than 100 substances including microorganisms, pesticides, herbicides, asbestos, lead, copper, petroleum-based products, and by-products of industrial and water treatment processes. As a result, we conduct more than 10,000 laboratory tests each year.

Using atomic absorption spectrometry (AAS) technology, chemists routinely monitor the water quality of the City’s drinking water.

Water Quality Data Tables

We are pleased to report that this year, Santa Monica Water continues to meet and exceed all U.S. EPA and State Drinking Water Health Standards. The following data tables compare our water quality with Drinking Water Health Standards. The data is organized by source of water in two categories, each with two sub-parts:

  • LOCAL GROUNDWATER
    • Arcadia Treatment Plant: Collects water from
      9 wells, completes treatment, and sends to distribution.
    • Santa Monica Well #1: Treats supply at the source and pumps directly into distribution.
  • METROPOLITAN WATER DISTRICT (MWD)
    • Weymouth Plant
    • Jensen Plant

The results are presented in two tables: Primary Drinking Water Quality Results and Secondary Drinking Water Quality Results. The primary results cover contaminants that may affect the public’s health. These contaminants include hazardous chemicals, metals, bacteria, and radioactivity. The secondary results cover parameters that may affect the aesthetics of the water, such as taste, appearance, and odor. These parameters include turbidity, minerals, and pH among others. For questions regarding water quality, call the Water Resources Division.

CITY OF SANTA MONICA WATER RESOURCES DIVISION

SUMMARY OF RESULTS FOR PRIMARY DRINKING WATER STANDARDS FOR 2020

 

 

 

LOCAL

 

 

 

IMPORTED

IMPORTED

Dates

Meets

 

MAJOR SOURCES

 

PHG/

State

WELL WATER

 

SM WELL #1(a)

SURFACE WATER

SURFACE WATER

Sampled

Std

 

IN DRINKING WATER

Parameter

[MCLG]/

MCL/

Arcadia Plant

 

 

 

Jensen Plant

Weymouth Plant

if other

 

 

 

 

 

{MRDLG}

{MRDL}

Average

Range

 

Average

Range

Average

Range

Average

Range

than 2020(b)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PRIMARY

DRINKING WATER STANDARDS (MANDATORY

HEALTH-RELATED STANDARDS)

 

 

 

 

Clarity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Turbidity (NTU)

NS

95% < 0.3

N/A

N/A

 

N/A

N/A

0.04

100% ≤ 0.3

0.04

100% ≤ 0.3

 

Y

Soil runoff

Microbiological

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total Coliform Bacteria

[0]

5%

 

City-

wide HighestCity-wideMonthly:Maximum:1.60%

0Range:PositiveNDSamples- 1.60% No violations

 

 

Y

Naturally present in the environment

(% positive samples/month)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fecal Coliform/E. Coli

[0]

(c)

 

 

 

CityCity-wide-wideMaximum:Maximum: 0 Positive Samplesles

 

 

 

Y

Human and animal fecal waste

Organic Chemical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Methyl tert-Butyl Ether (MTBE) (ppb)

13

13(5*)

ND

ND

 

ND

ND

ND

ND

ND

ND

 

Y

Leaking underground storage tanks

Trichloroethylene (ppb)

1.7

5

0.3

ND - 0.6

 

ND

ND

ND

ND

ND

ND

 

Y

Discharge from metal degreasing sites

Disinfection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Byproducts & Residuals

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total Trihalomethanes (ppb)

NS

80

 

 

 

City-wide LRAA: 15.9

Range: 4.6 -

33.9

 

 

 

Y

By-product of drinking water chlorination

 

 

 

City-wide LR41A: 16 Range: 4 - 55

 

 

 

 

Haloacetic Acids (ppb)

NS

60

 

 

 

CityCity-wide- LRAAA:2.20 Range:ange:NDND- 9- 7.8

 

 

 

Y

 

 

 

Total Chlorine/Chloramines (ppm)

{4}

{4}

 

 

 

City-wideCity-Average:wide Average:2.30 1.2Range:Range:ND0-.22-.92.4

 

 

 

Y

Drinking water disinfectant added for treatment

Bromate (ppb)

0.1

10

N/A

N/A

 

N/A

N/A

4.4

1.4 - 6.0

2

ND - 4.2

 

Y

By-product of drinking water ozonation

Total Organic Carbon

N/A

TT

N/A

N/A

 

N/A

N/A

2.2

1.8 - 2.3

2.4

2.1 - 2.6

 

 

 

 

 

Inorganic Chemicals

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Aluminum (ppm)

0.6

1 (0.2*)

ND

ND

 

0.02

0.02

0.116**

ND - 0.220

0.149**

0.008 - 0.210

 

Y

Erosion of natural deposits; used in water treatment process

Arsenic (ppb)

0.004

10

ND

ND

 

1.4

1.4

ND

ND

ND

ND

 

Y

Erosion of natural deposits

Barium (ppm)

2

1

0.02

0.02

 

0.06

0.06

ND

ND

ND

ND

 

Y

Discharge from oil and metal industries; Erosion of natural deposits

Chromium (ppb)

[100]

50

ND

ND

 

ND

ND

ND

ND

ND

ND

 

Y

Discharge from steel and pulp mills; natural deposits erosion

Chromium 6 (ppb)

0.02

NS

0.2

0.2

 

0.5

0.5

ND

ND

ND

ND

 

Y

Naturally occuring; industrial waste discharge

Copper (d) (ppm)

0.3

AL=1.3 (1.0*)

 

 

City

-wide, 90th percentile: 0.30

0 sites out of 30 exceeded the AL

 

2019

Y

Corrosion of household plumbing systems

Fluoride After Treatment (ppm)

1

2

 

 

 

Control Range: 0.6 - 1.2

City-wide Range: 0.6 - 1.0

 

 

 

Y

Water additive for dental health

 

 

 

 

 

City-wide, 90th percentile: 2.30

0 sites out of 30 exceeded the (d)

 

 

 

 

 

 

Lead (d) (ppb)

0.2

AL=15

 

 

City-wide 90th percentile 2.8

0 site out of 34 exceeded the ALL (e)

 

2019

Y

Corrosion of household plumbing systems

Nitrate (as N) (ppm)

10

10

0.6

0.4 - 0.7

 

3.8

3.7 - 4.0

ND

ND

ND

ND

 

Y

Runoff from fertilizer use; leaching from sewage;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

erosion of natural deposits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

erosion of natural deposits

 

Perchlorate (ppb)

1

6

ND

ND

 

1.9

1.9

ND

ND

ND

ND

 

Y

 

 

 

 

 

Industrial waste discharge

 

Radionuclides

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Alpha emitters (pCi/L)

[0]

15

2.9

ND - 5.8

 

ND

ND

ND

ND

ND

ND

 

Y

Erosion of natural deposits

Beta/photon emitters (pCi/L)

[0]

50

N/A

N/A

 

N/A

N/A

ND

ND

ND

ND

 

Y

Decay of natural and man-made deposits

Combined Radium (pCi/L)

[0]

5

ND

ND

 

ND

ND

ND

ND

ND

ND

 

Y

Erosion of natural deposits

Uranium (pCi/L)

0.43

20

2.3

1.5 -3.3

 

1.1

1.1

ND

ND -3

2

1 - 3

 

Y

Erosion of natural deposits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KEY TO ABBREVIATIONS

FOR ADDITIONAL WATER QUALITY QUESTIONS, CONTACT JACK MIYAMOTO, LEAD CHEMIST AT (310) 434-2672

PDWS = Primary Drinking Water Standards are MCLs and MRDLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements.

PHG = Public Health Goal, The level of a contaminant in drinking water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency.

MCLG = Maximum Contaminant Level Goal, The level of a contaminant in drinking water below which there

is no known or expected risk to health. MCLGs are set by the U.S. Environmental Protection Agency.

MCL = Maximum Contaminant Level, The highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.

MRDL = Maximum Residual Disinfectant Level is the highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

MRDLG = Maximum Residual Disinfectant Level Goal is the level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

LRAA = Locational Running Annual Average. The running annual average is based on monitoring location.

AL = Regulatory Action Level is the concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.

N/A = Not Applicable NS = No Standard

ND = Monitored for but Not Detected

NTU = Nephelometric Turbidity Units - used to measure cloudiness of drinking water.

  1. = Treatment Technique is a required process intended to reduce the level of a contaminant in drinking water. ppb = parts per billion, or micrograms per liter (µg/l)
    ppm = parts per million, or milligrams per liter (mg/l) pCi/L = picocuries per liter
  • = secondary standard
  • = Highest Running Annual Average (RAA)
  1. = SM Well#1 is pumped into a transmission line, is blended with Imported Surface Water and enters the system at 19th St. & Idaho Ave.
  2. = The City is not required to test for every parameter each year. If indicated, data is from a previous year.
  3. = Two consecutive Total Coliform-positive samples, one of which contains Fecal Coliform / E. Coli constitutes an acute MCL violation. No violations occurred for 2020.
  4. = The MCL has been replaced with a treatment technique requiring agencies to optimize corrosion control. Results given are from first draw, at-the-tap monitoring performed every three years.

CITY OF SANTA MONICA WATER RESOURCES DIVISION

Summary of Results for Secondary Drinking Water Standards for 2020

 

 

 

LOCAL

 

 

IMPORTED

IMPORTED

Dates

Meets

MAJOR SOURCES

 

PHG/

State

WELL WATER

SM WELL #1(a)

SURFACE WATER

SURFACE WATER

Sampled

Std

IN DRINKING WATER

Parameter

[MCLG]

MCL

Arcadia Plant

 

 

Jensen Plant

Weymouth Plant

if other

 

 

 

 

 

Average

Range

Average

Range

Average

Range

Average

Range

than 2020(b)

 

 

 

SECONDARY DRINKING WATER STANDARDS (AESTHETIC STANDARDS)

 

 

 

 

 

 

 

 

 

Chemical Parameters

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Chloride (ppm)

NS

500

42

37

- 46

105

105

52

51 - 54

93

93

 

 

Y

Runoff/leaching from natural deposits; industrial wastes

Color (units)

NS

15

<5

<5

<5

<5 -5

2

1

-3

1

 

1

 

 

Y

Naturally-occurring organic materials

Iron (ppb)

NS

300

53

23 - 145

22

22

ND

ND

ND

ND

Y

Leaching from natural deposits; industrial wastes

Manganese (ppb)

NS

50

4.3

2.4

- 6.6

9.2

9.2

ND

ND

ND

ND

Y

Leaching from natural deposits

Odor- Threshold (units)

NS

3

<1

 

<1

<1

<1

2

 

2

2

 

2

 

 

Y

Naturally-occurring organic materials; chlorine

Specific Conductance (µmho/cm)

NS

1600

516

451 - 595

1316

1298 - 1336

460

451 - 468

966

963

- 968

 

 

Y

Substances that form ions when in water; seawater influence

Sulfate (ppm)

NS

500

76

64

- 84

247

247

54

53

- 56

213

211

- 215

 

 

Y

Runoff/leaching from natural deposits; industrial wastes

Total Dissolved Solids (ppm)

NS

1000

303

255

- 336

977

961 - 989

260

255

- 264

590

587

- 593

 

 

Y

Runoff/leaching from natural deposits

Turbidity (NTU)

5

0.14

0.07

- 0.42

0.35

0.15 - 1.00

ND

ND

ND

ND

Y

Soil runoff

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADDITIONAL PARAMETERS

KEY TO ABBREVIATIONS

Alkalinity (ppm) Boron (ppb) Calcium (ppm)

Hardness (as CaCO3) (ppm) Magnesium (ppm)

pH (units) Potassium (ppm) Radon (pCi/L) Sodium (ppm)

1, 4-Dioxane (ppb) N-Nitrosodimethylamine (NDMA) (ppt) tert-Butyl Alcohol (TBA) (ppb)

NS

NS

NS

NL=1000

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NS

NL=1

3 NL=10

NS NL=12

108

99 - 125

170

170

39

32

- 44

163

137

- 193

17

16

- 18

8.1 7.9 - 8.4

1.4 1.2 - 1.5

ND

ND

45

43 - 47

0.4 ND - 1.5

N/A

N/A

ND

ND

327

319

- 334

120

120

122

121

- 125

567

549 - 585

62

62

7.1 6.8 - 7.3

3.83.8

400

400

84

84

ND

ND

N/A

N/A

N/A

N/A

82

79 - 86

170

170

27

26 - 28

108

107 - 110

12

11 -12

8.4 8.4

2.6 2.5 - 2.6

ND

ND

47

46 - 48

N/A

N/A

22

ND ND

118

118

- 119

130

130

25

23

- 27

262

256

- 268

26

25

- 26

8.18.1

4.6 4.5 - 4.6

ND

ND

95

93 - 97

N/A

N/A

ND

ND

ND

ND

PHG = Public Health Goal is the level of a contaminant in drinking water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency.

MCLG = Maximum Contaminant Level Goal is the level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the U.S. Environmental Protection Agency.

MCL = Maximum Contaminant Level is the highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.

MRDLG = Maximum Residual Disinfectant Level Goal is the level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

FOR ADDITIONAL WATER QUALITY QUESTIONS, CONTACT JACK MIYAMOTO, LEAD CHEMIST AT (310) 434-2672

NL = Notification Level, or the concentration of a contaminant that the California Department of Public Health has determined does not pose not a significant health risk, but warrants notification.

N/A = Not Applicable NS = No Standard

ND = Monitored for, but Not Detected

NTU = Nephelometric Turbidity Units - used to measure cloudiness of drinking water.

ppb = parts per billion, or micrograms per liter (ug/l) ppm = parts per million, or milligrams per liter (mg/l) ppt = parts per trillion, or nanograms per liter (ng/l) umho/cm = micromhos per centimeter

  • = less than
  1. = SM Well#1 is pumped into a transmission line, is blended with Imported Surface Water and enters the system at 19th St. & Idaho Ave.
  2. = We are not required to test for each parameter every year. If indicated, data is from a previous year.
  3. = MWD has developed a flavor-profile analysis method that can more accurately identify odor occurences.

COVID-19 and Drinking Water

According to the U.S. EPA and CDC, the COVID-19 virus has not been detected in drinking water supplies. Current research shows no evidence that COVID-19 virus can be spread to people by consuming treated drinking water. Filtration and disinfection methods used in water treatment plants remove and kill viruses, bacteria and pathogens.

The Santa Monica Water Treatment Plant carries out multi-step treatment processes and complies with all federal and state regulations under the Safe Drinking Water Act (SDWA). Compliance with these regulations has been established for many years to protect the public health from disease or illness caused by pathogenic organisms. Santa Monica water treatment uses chlorine / chloramine disinfection that inactivates pathogens in the water and then physically removes them through advance technology, reverse osmosis (RO). Imported water

from the Metropolitan Water District (MWD) undergoes numerous treatment processes and complies with the same federal and state regulations. Their treatment process is effective in killing bacteria and viruses.

The Santa Monica community can continue to use and drink water from their tap as usual.

Additional information on COVID-19 and drinking water can be found on the Water Research Foundation website:

www.epa.gov/coronavirus/frequent-questions-related- coronavirus-covid-19

and Centers for Disease Control and Prevention website:

www.cdc.gov/healthywater/drinking/index.html

The Arcadia Water Treatment Plant provides multi-barrier treatment to provide safe and high-quality drinking water to the City.

Facts about Radon

Radon is a radioactive gas that you cannot see, taste, or smell. It is found throughout the U.S. Radon can move up through the ground and into a home through cracks and holes in the foundation. Radon can build up to high levels in all types of homes. Radon can also get into indoor air when released from tap water from showering, washing dishes, and other household activities. Compared to radon entering the home through soil, radon entering the home through tap water will in most cases be a small source of radon in indoor air. Radon is a known human carcinogen. Breathing air containing radon can lead

to lung cancer. Drinking water containing radon may also cause increased risk of stomach cancer. If you are concerned about radon in your home, test the air in your home. Testing is inexpensive and easy. You should pursue radon removal for your home if the level of radon in your air is 4 picocuries per liter of air (pCi/L) or higher. There are simple ways to fix a radon problem that are not too costly. For additional information, call your state radon program (800) 745-7236, the U.S EPA Safe Drinking Water Act Hotline (800) 426-4791, or th.e National Safety Council Radon Hotline (800) 767-7236.

Information is also available at the California EPA website: www.cdph.ca.gov/Programs/CEH/DRSEM/Pages/EMB/ Radon/Radon.aspx

Per- and Polyfluoroalkyl Substances (PFAS)

PFAS are a group of compounds containing carbon to fluorine chemical bonds, one of the strongest in organic chemistry. They are manufactured and used to enhance repellency of water, grease, and soil in consumer products; thus, they are very stable and resistant to environmental degradation. If exposed, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate (PFOS) are readily absorbed but not readily eliminated from the human body. According to the State Water Resources Control Board (SWRCB) potential health concerns, long-term exposure can cause harmful health effects to a developing fetus or infant; suppress the immune system; disrupt the thyroid function, increased liver weight; and can lead to cancer.

California State Water Resources Control Board, Division of Drinking Water (DDW) has issued drinking water notification levels (NLs) and response levels (RLs) for PFAS. According to OEHHA recommendations, these levels provide some health risk protection in sensitive populations and demonstrate low cancer risk with 70- year lifetime exposure.

If a utility exceeds the RL(s), regulations require the water source be taken out of service, provide treatment, or notify customers.

Plant operators perform routine maintenance on the cartridge filters and make sure the system is working properly.

Perfluoroalkyl and Polyfluoroalkyl Substances

PFAS Compound

Notification Level

Response Level

 

(ppt)

(ppt)

Perfluorooctanoic

5.1ppt

10 ppt

Acid (PFOA)

 

 

Perfluorooctanesulfonic

6.5 ppt

40 ppt

Acid (PFOS)

 

 

Parts per trillion (ppt) = 1 second in 31,709.8 years

Apart from drinking water, PFOA and PFOS exposure can occur from other sources: firefighting foaming/fire preventing agents; products that repel water, grease, and soil.

In April 2019, the SWRCB investigated source water wells in California most vulnerable to PFAS contamination. This included those near airports and landfills, and later those near secondary sources of PFAS activities. SWRCB did not require Santa Monica to sample its sources. However, City staff proactively sampled the City’s Drinking Water sources in August/September of 2019, and PFAS was not detected in our drinking water supply. All PFAS samples analyzed by an outside laboratory were Non-Detect (ND).

Additionally, Granular activated carbon (GAC) and reverse osmosis (RO), both part of the City’s treatment process, are effective at removing many PFAS compounds.

Answers to the Most Commonly Asked Questions About Your Tap Water

What affects the taste of my water?

The taste of drinking water is affected by its mineral content as well as the presence of chloramine, which is used to protect against potential bacterial contamination. Sometimes plumbing can cause a metallic flavor, especially if the water has been sitting in the pipes

for many hours.

How hard is my water?

The water delivered to our customers has an average hardness of 163 ppm. To convert to grains per gallon, divide the hardness in ppm by 17.1. The average hardness in our water is 9.47 grains per gallon.

What type of disinfectant is in my water?

A low level of chloramine disinfectant is added to your tap water to protect from waterborne pathogens. Chloramine is formed when a small amount of ammonia is added to chlorinated water. This type of disinfectant is very stable and reduces the formation of disinfection by-products

in your water. These by-products are an unintended consequence of the disinfection process but are far below the allowable limit in Santa Monica water. We carefully monitor the amount of the chloramine disinfectant to protect the quality of your water.

Is the City’s water fluoridated?

The City of Santa Monica is required by state law to add fluoride to drinking water to help prevent dental decay in consumers. Current regulations require fluoride levels in the treated water be maintained between 0.6 to 1.2 ppm with an optimum dose of 0.7 ppm. Our monitoring showed that fluoride levels in the treated water distribution system averaged 0.74 ppm.

According to the American Dental Association and CDC, it is safe to use optimally fluoridated water for preparing infant formula. If an infant is primarily fed infant formula prepared with fluoridated water, there may

be an increased chance for mild enamel fluorosis, but enamel fluorosis does not affect the health of the infant or the health of the infant’s teeth. To lessen this chance, deionized, purified, distilled or demineralized bottled water can be used. If you have additional questions about fluoride, contact your health provider.

Additional information can be found at the State Board website: www.waterboards.ca.gov/drinking_water/ certlic/drinkingwater/Fluoridation.shtml

or the CDC website: www.cdc.gov/fluoridation

What about lead from my plumbing?

The lead contamination that made the news in Flint, Michigan is highly unlikely in Santa Monica. The quality of

our source water is much different than Flint’s, and our corrosion control processes comply with state drinking water regulations. A pool of “high risk” homes, which were plumbed before the ban on lead in solder, have been tested every three years since 1992 and has continually indicated there is little tendency of our water to leach lead out of plumbing. The next round of testing is scheduled this year in 2022.

If your home plumbing contains lead, there is a limited potential for lead to leach into your water. Fortunately, the minerals in our water help to protect against pipe corrosion, greatly reducing the potential of lead entering the water. These minerals form a film called “scale” that prevents water from coming into direct contact with home plumbing. The most common place to find lead in household plumbing is in chrome-plated brass faucets and fixtures. California enacted stricter regulations for plumbing fixtures in 2010 further reducing the potential for lead leaching from household plumbing.

If present, however, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The City of Santa Monica Water Resources Division is responsible for providing high quality drinking water but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you do so, you may wish to collect the flushed water andreuse it for another beneficial purpose, such as watering plants. If you are concerned about lead in your water, you may wish to have your water tested. To get your water tested, please call the Water Quality Office. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at www.epa.gov/safewater/lead.

Do I really need to buy a water filter or home treatment system?

The decision to buy a water filter or home treatment system is a matter of personal preference. Our water meets or exceeds rigid state and federal health standards. If you decide to buy a filter or system, be a smart shopper and do some homework. Any treatment device you buy should be registered with the National Sanitation Foundation (NSF). Contact NSF toll free at (800) 673-6275 or visit www.nsf.org.

What about bottled water?

Again, the decision is yours. You may find that keeping a pitcher of tap water in your refrigerator is a low-cost, water-thrifty alternative to buying more expensive bottled water, and it’s far better for the environment. Even when the bottle is reused or recycled, the petrochemicals used in creating the bottle and the transportation of the water have a significant impact on the environment.

Water Conservation

The City of Santa Monica has developed a sustainable water supply and taken responsible steps to improve water conservation in the midst of a changing climate. The City is actively seeking ways to conserve and improve the City’s water supply for future generations. To continue meeting our water conservation goals, the City urges our residents to continue their conservation effort because small changes make a difference. For more information and water saving tips, please visit www.smgov.net/ Departments/OSE/categories/water.aspx

Sustainability

The City of Santa Monica is still offering incentives for environmentally friendly measures taken by the community. For more information, please call or visit the Office of Sustainability website at www.smgov.net/water.

We need you!

Public involvement is fundamental to ensuring that we are meeting our water supply demand, water quality goals, and the highest customer service level. We welcome your feedback and invite you to get involved with the City of Santa Monica in the following ways:

  • Participate in conservation events
  • Attend City Council and community meetings
  • Sign up for the newsletters and alerts
  • Please let us know how we are doing

For information on these opportunities, please call Water Resources and the Office of Sustainability and the Environment. For a digital copy of this report, please visit: waterquality.smgov.net

Where Can I Get More Information?

City of Santa Monica Public Works and Water Resources Division Offices:

Water Resources/Water Quality

(310) 434-2672

24-Hour Water Emergencies

(310) 434-2672

Wastewater

(310) 458-8532

Lead Chemist

(310) 434-2672

Billing Office

(310) 458-8224

Visit our website: www.smgov.net/departments/publicworks/water.aspx

Santa Monica City Council Meetings:

2nd & 4th Tuesdays of each month

Council Chamber

1685 Main Street, Santa Monica

www.smgov.net/cityclerk/agendas.apsx

City of Santa Monica Office of Sustainability and

the Environment

(310)

458-2213

Conservation Office

(310)

458-8972

www.sustainablesm.org

 

 

Metropolitan Water District (MWD)

 

 

of Southern California

(213)

217-6850

Toll Free

(800) 354-4420

www.mwdh2o.com

 

 

California State Water Resources Control Board

Division of Drinking Water

(818)

551-2004

www.waterboards.ca.gov/drinking_water/

 

U.S. Environmental Protection Agency

 

 

Office of Ground Water & Drinking Water

 

 

Safe Drinking Water Hotline

(800) 426-4791

www.epa.gov/safewater/dwhealth.html

water.epa.gov/drink/guide

Water Resources Division

P.O. Box 2200, 1685 Main Street

Santa Monica, CA 90406-2200

This brochure is printed with vegetable-based inks on paper made from recycled paper.

Contaminants


Santa Monica

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the California State Water Resources Control Board, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility details

  • Serves: 92185
  • Data available: 2012-2017
  • Data Source: Purchased surface water
  • Total: 27

Contaminants That Exceed Guidelines

  • 1%2C4-Dioxane
  • Arsenic
  • Bromodichloromethane
  • Bromoform
  • Chromium (hexavalent)
  • Dibromochloromethane
  • Nitrate
  • Nitrate and nitrite
  • Total trihalomethanes (TTHMs)
  • Uranium

Other Detected Contaminants

  • Barium
  • Bromochloroacetic acid
  • Chlorate
  • Chlorodifluoromethane
  • Chloroform
  • Chromium (total)
  • Dibromoacetic acid
  • Dichloroacetic acid
  • Fluoride
  • Haloacetic acids (HAA5)
  • Manganese
  • Molybdenum
  • MTBE
  • Strontium
  • Trichloroacetic acid
  • Trichloroethylene
  • Vanadium

Reminder

Always take extra precautions, the water may be safe to drink when it leaves the sewage treatment plant but it may pick up pollutants during its way to your tap. We advise that you ask locals or hotel staff about the water quality. Also, note that different cities have different water mineral contents.

Sources and Resources

What you have probably noticed when shopping in any of the large department stores is a large display dedicated to the topic of tap water in Santa Monica, CA. The reason this display is there is because these water sources are considered a public health concern. There are some states that have strict rules on the amount of contaminants that can be present in water, but Santa Monica is different because its population is over seven thousand people.

If the public health is something that you are concerned about then it is important to see just how safe your tap water is. Most of us do not realize that most of our water is not safe to drink because many companies have been allowed to use chemicals and other artificial materials that are known or suspected to cause cancer or other illnesses.

These water sources have been tested over the years and all reports have shown that there are no significant problems associated with it. This information has given yo

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