Our Promise to Our Customers:

WAT

SANTA CLARITA VALLEY SUPPLY PORTFOLIO

SCV Water’s water supply comes from four main sources, imported water, groundwater, recycled water and water banking (storage). Leveraging multiple sources of water ensures our customers always have water when they need it.

Clean, Safe Water That You Can Trust

Dear Customer:

The past year has brought all of us challenges and uncertainty. One thing that our customers can rest assured about is that our team of essential workers continues to provide you with clean, safe water day and night.

SCater and aterworks District ve worked together to provide you with our ater t e

Where your water comes from

How we treat and monitor it thousands of times per year

WAT

More than a quarter (17,300 acre-feet) of our water comes from local, sustainable groundwater sources. These underground water aquifers store water that naturally comes from precipitation.

AT

We rely on imported water from the State Water project for nearly 75 percent (48,300 acre-feet) of our water needs. This water journeys hundreds of miles from the Sierra Nevada’s in Northern California before reaching the Santa Clarita Valley.

AT

Less than one percent of our water currently comes from recycled water. Future plans will expand our recycled water use for outdoor irrigation to ensure our customers have a reliable water source for years to come.

AT

Our Agency also stores (banks) 141,000 acre-feet of water in nearby Kern County. This water is available to us in times of need, such as during a drought or emergency.

How we ensure its safety when it reaches your tap

ead this report, you’ll also find important information on our e planning efforts, programs and initiatives.

e appreciate playing such a large role in the fabric of the Santa Clarita alley and being a trusted source for your water supply.

AT

Serving our community safe, reliable water that meets or surpasses rigorous state and federal standards is a hallmark of our agency. It takes a lot of testing, storage reservoirs, and pipes, along with our talented team of water professionals, to make sure water is delivered to your homes 24/7.

20+ Billion

Gallons of Water Served to Customers

Water Talk

in an acre-foot

One acre-foot of water equals 325,851 gallons of water. That’s enough water to cover a football field one foot deep; combined, our water sources equal 206,870 acre-feet!

PLANNING FOR OUR FUTURE

ater is undertaking several multiter planning efforts to ensure our customers have access to reliable water today and tomorrow. ter plans and programs will enhance our water reliability, , environmental sustainability and delivery

WATER YOU CAN TRUST

SCV Water’s 2021 Water Quality Report

Your health and safety is our top priority. Before reaching your tap, our water must withstand rigorous rounds of treating, monitoring and testing thousands of times per year.

ter.comor more info.

GROUNDWATER SUSTAINABILITY PLAN alley oundwater esponsibly manages

our vital groundwater, which is stored underground in the alley e our oundwater eed by

the oundwater t is tailored to the resources and needs

of our community to maintain and improve resource management. f this plan is to demonstrate sustainable groundwater management within 20 years.

RECYCLED WATER PLANNING

Recycled water is a renewable resource and has been used for outdoor irrigation in our service area since 2003. Using recycled water extends our drinking water supply, reduces our reliance on costly imported water and expands our local water supply.

on a recycled water management plan to guide future efforts.

Protecting Our Water Source

e regularly sample where our water comes om

a Source ater Assessmente work with scientists and eom the state to ensure that any contaminants ound in our water are proactively addressed.

Cleaning Our Water

ter travels om the source to one o

treatment plants, we use multiple processes to treat and clean our water. Here harmganisms, like viruses and bacteria, are removed or inactivated.

Sampling and Testing Our Water

o ensure our water system is working as it should and that water meets or surpasses all state and ederal health and saety standards, we conduct more than ,ter

tests each year.

Water Talk: What is a PPM, PPB, PPT?

oughout our water eport, you will see contaminants measured by parts per million or

per billion or ograms/

or e’s a breakdown ot these measurements translate to in real lie.

op

in a hot tub

ograms/op

in an e swimming pool

rillion or op in a acre lake

URBAN WATER MANAGEMENT PLAN ater’s team is preparing our Urban ater te.

stateeed update will direct our longesource planning to guarantee adete water supplies are available to meet future water needs.

WATER SHORTAGE CONTINGENCY PLAN

IMPORTANT INFO FROM THE EPA ON DRINKING WATER

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/AI

other immune system disorders, some elderly, and int risk om inections. about drinking water om their health care providers. .S. A/or ol opriate means to lessen the risk oection by obial contaminants are available om the .S. A’s Sae ater Hotline

esults in this report were analyed in eport was

not detected or was detected below the detection level or purposes oeporting. our local water supplier is in compliance with all drinking water regulations unless a specific violation is noted.

o ensure that we have adete water supplies now and in the future, ater is preparing our ater eed by the state and will

improve water conservation and water shortage planning, especially during a drought or catastrophic event.

PFAS TREATMENT

e many communities throughout the nation, very small amounts of polyfluoralkyl substancese in our water. ater, and other agencies, did not put these chemicals in our water but over time these chemicals enter our water supply through manufacturing, product use and wastewater discharge – which are all potential sources for . essing ter supply, ater is

using a threeonged approach

TESTINGoactively monitors the f the water from our wells

to ensure it meets the state’s regulations for , which are some of the most stringent in the nation.

TREATMENT, innovative strategies and proven treatment options, ater is taking immediate steps to address oundwater.

TRANSPARENCYrom our website to social media and community meetings to direct mail, ater is making sure our customers have the most current information.

4 | SCV WATER

MICROBIOLOGICAL

obial contaminants, such as viruses and bacteria, can be naturally occurring or result om urban storm water runoff, sewage treatment plants, septic systems, agricultural livestock operations and wildlie.

ter is tested throughout the distribution systems weekly or otal orm e naturally occurring

in the environment and are indicators or finding possible disease-causing contamination oter system.

or esults or

larger systems and two positive samples per month in smaller systems. Iough routine testing,

the water is ed or

indicates the potential oecal contamination.

detected in any drinking water system in the Santa alley ter system was out o

the otal orm ter-

borne parasites dia lamblia in any sample oeated imported surter.

All water systems are reed to comply with the state otal orm ederal otal orm

that took effect April . ederal rule protects public health by ensuring the integrity oter distribution system and monitoring or the presence oobials and .S. onmental otection Agency

Ates greater public health protections as the

new rule rees water systems that are vulnerable to microbial contamination to identioblems. ater systems that

eceed a specified eorm occurrences are

reed to conduct an assessment to determine i deects eect them.

METALS AND SALTS

e reed to be tested in groundwater once

every three years and in surter every month. turally occurring salts are ound in both suroundwater.

include chloride, fluoride, nitrate, nitrite, calcium, magnesium, potassium and sodium. , these are reerred to as otal

e up what

is known as water hardness which can cause scaling om the precipitates. ter. Any

fluoride detection is naturally occurring in the groundwater.

te in drinking water at levels above ogen is a health risk or in

levels can interere with the capacity o carry oesulting in a serious illness shortness oeath and blueness o nitrate levels may also aect the ability o oegnant woman and

those with certain ene caring or an

ine pregnant, you should ask advice om your health care provider. te was not detected above the in any sample.

SCV WATER | 5

LEAD AND COPPER

Every three yearster system is reed to sample for

lead and copper at specific customer taps as part of the Copper e also tested in source water

supplies (i.e.oundwater and surface water). ater also tested all public -ea.

of lead were detected in any source waters in the Valley by any of the local water systems.

fants and young children are typically more vulnerable to lead in drinter than the general population

health problems could result. our water system is responsible for providing high ter but cannot control the

materials used in customer plumbing components. e

DRINKING WATER SOURCE ASSESSMENT AND PROTECTION

The sources of drinter (both tap water and bottled water) include riverseseamseservoirs

water travels over the surface of the land or through the ground dissolves naturally occurring minerals and

materialesulting from the presence of animals or from human activity.

Contaminants that may be present in source water include:

• obial contaminants such as viruses and bacteria that may come from sewage treatment plants agricultural livestoctions and wildlife.
• ganic contaminantst can be
  naturally occurring or result from urban stormwater runoff industrial or domestic wastewater discharges production
• t may come from a variety of
  sources such as agricultureter runoff and residential uses.
• Organic chemical contaminants
  volatile organic chemicals that are by-products of industrial processes and petroleum productionom
  gas stationster runofftion and septic systems.
• t can be naturally occurring or be
  the result of oil and gas production and mining activities.

To ensure that tap water is safe to drintate ater ces Control d (f ater

ORGANIC COMPOUNDS

Organic chemical contaminants including synthetic and volatile organic compounds (VOC) are by-products of industrial processes and petroleum production. Treated imported surface water and local groundwater wells are tested at least annually for VOCs. Trichloroethylene (TCE) and Tetrachloroethylene ( were found in trace amounts (below the t a few locations. Consumption of water containing TCE or cess of

the oblems and an increased risf cancer.

TURBIDITY

Turbidity is a measure of the cloudiness of the water. e monitor it because it is a good indicator of water .

can hinder the effectiveness of disinfectants. urthermoret the treatment plantsed because it is a good

indicator of the effectiveness of our filtration systems.

6 | SCV WATER

that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing.

e concerned about elevated lead levels in your home’s waterve your water tested by a private

laboratory. ter has been sitting for several hours can flush your tap for ore using

tap water. formation on lead in drinter testing methodse to minimie ee

is available from the ’s fe ater (t www.epa.gov

(escribe regulations that limit the amount of certain contaminants in water provided by public water systems. ..

tion regulations and California law

also establish limits for contaminants in bottled water that provide protection for public health. formation on bottled water is available on the California f

ograms fdbprogramsoodsafetyprogramter.asp

Every water division completed the ater ce otection (ogram for e

groundwater sources in e also completed

for each new groundwater well placed into service by water systems. Each s at vulnerability to contamination

and assesses potential sources of contamination from sources such asepair shopstions

facilitiested in the vicinity of each groundwater source.

f the drinter sourceell Eor the Valencia ater ea was completed

f the permitting process for the new well. There are no ces detected in the water

supply. ell Eed most vulnerable to chemical petroleum pipeline and electricalonic manufacturing

that is not associated with any detectable contaminants. The well is located west of The Old f

32. Commerce Center e information regarding
    following websiteterboards.ca.govter drinter.html. ou may ref
    the assessment be sent to you by contacting the

district engineer at (.

SCV WATER SOURCES OF WATER SUPPLY

ater provides drinter from multiple sources. tate ater oter is imported from ornia

treated through one of our two treatment plants and then enters the distribution system. oundwater is pumped from two natural underground aerstion.

ter is also provided for some irrigation uses. These

sources are served in various proportions to service areas within the ater ater

and Valencia ater Vovides treated water to aterwors .

LOS ANGELES COUNTY WATERWORKS DISTRICT #36 serves approtely ted in

Val Verdeough ed connections. The

water supply is composed of oundwater from one well pumping from the ormation beneath the

area and f imported water.

District 36 will begin work to replace an aged water main in the unincorporated community of Val Verde, on Del Valle Road, Hasley Canyon Road to Lincoln ews will install a new

water main to enhance water consertion and improter supply throughout the district

ough ch

SCV WATER - NEWHALL WATER DIVISION ser located in the Castaic, ee and esoro del Valle areas, Castaic customers receiter

and oundwater, ecei

imported water and oundwateree customers receiter, and esoro del Valle customers receiter

SCV WATER - SANTA CLARITA WATER DIVISION pro water to a portion of the City of ted

areas of Los , and eceiotely

water and oundwater in

SCV WATER - VALENCIA WATER DIVISION supplies water to customers in Valencia, tef Castaic,

, customers recei

water, oundwater and ecycled water ed to large landscape customers

CHEMICALS IN THE NEWS

PERCHLORATE

chlorate is an inorganic chemical used in solid rocket propellant, fireworks, ef industries

usually gets into drinking water as a result of enonmental contamination from historic industrial operations that used, stored, or disposed of perchlorate and its saltschlorate has been shown to interfere with uptake of iodide by the thyroid gland, and thereby reduce the production of thyroid hormones leading to adects associated with inadete hormone

le

chlorate contaminant plume has been identified and seor perchlorate

• the DDf 6 ugor perchlorate Diater , ,
  authorif the perchlorateeatment facility and, on , oduced the

ABBREVIATIONS

AL = Action Level

DLR = Detection Limit for Reporting

MRL = Minimum Reporting Level

ESFP = Earl Schmidt Filtration Plant

MCL = Maximum Contaminant Level

MCLG = Maximum Contaminant Level Goal

MG / L = milligrams / Liter

UG / L = micrograms / Liter

NG / L = nanograms / Liter

US / CM = microsiemens / centimeter

NA = Not Analyzed / Not Applicable

NTU = Nephlometric Turbidity Units

PCI / L = picocuries / Liter

PHG = Public Health Goal

treated water into the distribution system in full compliance with the reements of its amended water

PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) polyfluoroalkyl substances e a group of chemicals that are resistant to heat, water, and oil

the tates onmental otection

emerging contaminant on the national landscape

forceable drinking water standards, called maor these substances, but they haf

nanograms per liter or a combined lef two of the more preooctanoic acid

perfluorooctanesulfonic acid ornia

tate ater Resources Control d – Dif Drinking ater has set notification and response lefor and notification leor constituents

lacking an ees public notification for constituents eceeding these esponse leegulatory, precautionary, healthe, where DDecommends remoter source from seroeatment if

that option is a

• DDor esponse leor f
  ch , DDf orders related
  to the sampling for ound of monitoring, ater emoom ser
  which eceeded the combined RL, DD reor
  ater
  responded by remoadditional wells from ser
• additional wells were emo

from seretions

approaching the RL, ater brought the first ion echange treatment for ee wells back into serently, ater is in f

design and construction for eatment plants to return more of these wells back into ser

esults tabulated in the table of this report are for the calendar year, ater is continuing

in wellsta in the table may reflect wells that are no longer in sere information and resources on ,

yourter

RVWTP = Rio Vista Water Treatment Plant

46. = Treatment Technique

RL = Response Level

* SWRCB considers 50 pCi/L to be the level of concern for Beta particles

• Refer to the first Import column for values left blank in Pinetree and Tesoro, except in the specific rows shown

• Depending on annual temperatures

• There are three MCLs for this parameter:

The first is the recommended long term MCL

The second is the upper long term MCL

The third is the short term MCL

4 The NL for Boron = 1000 ug/L or 1 mg/L

• There is currently no MCL for hexavalent chromium. The previous MCL of 10ug/L was withdrawn on September 11, 2017.

SCV WATER | 7

RADIOLOGICAL TESTS

Radioactive compounds can be found in both ground and surface waters and can be naturally occurring or be the result of oil and gas production and mining activities. Testing is conducted for two types of radioactivity: alpha and beta. If none is detected at concentrations above five picoCuries per liter (pCi/eed. If it is detected

above ter must be checed for uranium and/or radium. or radionuclides can be different for each groundwater well. of thisnot all data may be from the

.

WATER QUALITY DEFINITIONS e vulnerable to contaminants

in drinter than the general population. Immuno compromised persons such as persons with cancer undergoing chemotherapyve undergone

organ transplants

system disordersfants can be particularly

at risom infections. These people should see drinter from their health care providers. The Centers for ol (Copriate

means to lessen the risf infection by Cryptosporidium

and other microbial contaminants and are available from the ’s fe ater

ornia onmental otection ds for the

of drinter. These standards are intended to protect consumers from contaminants in drinter. f the standards are based on the concentration of contaminants but a few are based on a Treatment TechniTTeed process intended to reduce the level of a contaminant in drinter. terter

reasonably be et least small amounts of

some contaminants. The presence of contaminants does not

necessarily indicate that water poses a health rise information about contaminants and potential health effects can be obtained by calling the ’s fe ater

Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinter.

are set as close to the

technologically feasible. e set to protect the odorf drinter.

Maximum Contaminant Level Goal (MCLG) or Public Health Goal (PHG : The level of a contaminant in drinter below which

there is no e set by Cal/ e set by the

Primary Drinking Water Standard (PDWS): or

contaminants that affect health along with their monitoring and reporting reementster treatment reements.

Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinter. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinter disinfectant below which there is no

eeflect the benefits of the

use of disinfectants to control microbial contaminants.

Detection Limit for Purposes of Reporting (DLR): The smallest concentration of a contaminant that can be measured and reported. e set by the

Reporting

Consumer Confidence Report Detection Level (CCRDL): The smallest concentration of a contaminant that can be measured and reportedtion changes in analytical methods.

Regulatory Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.

Notification Level (NL): State guidelines developed by DDW that address the concentration of a contaminant which, if exceeded, triggers public notification.

Response Level (RL): If a chemical is present in drinking water that is provided to consumers at concentrations considerably greater than the notification level, DDW recommends that the drinking water system take the source out of service.

DISINFECTION BY-PRODUCTS

SCV Water - Imported Division uses ozone and chloramine to disinfect its water while the water divisions use various forms of chlorine and chloramine to disinfect their groundwater sources. Disinfection By-Products (DBPs), which include Total Trihalomethanes (TTHMs) and Haloacetic Acids (HAA5), are generated by the interaction between naturally occurring organic matter and disinfectants such as chlorine. TTHMs and HAA5 are measured at multiple locations throughout the distribution system. Each location is averaged once per quarter and reported as a running average by location. The DBP bromate is formed when the primary disinfectant ozone is applied converting bromide to bromate. Bromate is measured weekly in the surface water treatment plant and compliance is based on a running annual average.

Treatment Technique (TT): A required process intended to reduce the level of a contaminant in drinking water.

Primary Drinking Water Contaminants: Contaminants associated with the protection of public health and that have enforceable standards.

Secondary Drinking Water Contaminants: Contaminants associated with aesthetic considerations such as taste, color and odor, and that have non-enforceable guidelines.

UNREGULATED CONTAMINANT MONITORING RULE The USEPA requires utilities to sample for emerging contaminates as part of the Unregulated Contaminant Monitoring Rule (UCMR). Every five (5) years the USEPA prepares a list of unregulated contaminants for drinking water suppliers to analyze. UCMR results are then used to assist in the development of future drinking water regulations. We recently completed the fourth round of UCMR sampling (UCMR 4) between 2018-2020. UCMR5 monitoring will occur between 2023-2025. For more information, please contact your local water supplier or visit the USEPA website epa.gov/dwucmr/ learn-about-unregulated-contaminant-monitoring-rule.

MICROBIOLOGICAL

CLARITY / TURBIDITY

0

0

0

NA

NA

NA

0

1

0

0

2

0

1

0