Santa Clarita Tap Water Quality Report
Santa Clarita's water has 4 contaminants above EPA MCLGs. We recommend using a certified water filter.
No single water system serves most of Santa Clarita (229,159 residents, Census 2024 estimate). Its large systems are SANTA CLARITA VALLEY WATER AGENCY (EPA counts 110,329 people served, about 48% of Santa Clarita's population); SANTA CLARITA VALLEY W.A.-SANTA CLARITA (EPA counts 135,022 people served, about 59% of Santa Clarita's population). EPA's counts may include people served outside Santa Clarita, so each share is at most that. Check which one bills you: each system's figures are shown separately below.
- SANTA CLARITA VALLEY WATER AGENCY: 121 contaminants tested, 4 above EPA MCLGs; health-based violations since 2020: 0
- SANTA CLARITA VALLEY W.A.-SANTA CLARITA: 135 contaminants tested, 4 above EPA MCLGs; health-based violations since 2020: 0
Other systems listed for Santa Clarita with results above guidelines: SANTA CLARITA VALLEY W.A.-SANTA CLARITA (4 above guidelines), SANTA CLARITA VALLEY W.A.-PINETREE DIV. (2 above guidelines), SANTA CLARITA VALLEY W.A.-TESORO DIV. (2 above guidelines)
Water systems
2 large systems
Residents (Census 2024)
229,159
Health-based violations since 2020
0
SANTA CLARITA VALLEY WATER AGENCY. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Aug 2025 · SANTA CLARITA VALLEY WATER AGENCY
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Santa Clarita Tap Water Safe to Drink?
We strongly recommend using a certified water filter to reduce exposure: Santa Clarita's water has 4 contaminants above EPA health-based guidelines. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Santa Clarita's water.
SANTA CLARITA VALLEY WATER AGENCY, Santa Clarita's water system, serves 110,329 people. 5 other systems are listed for Santa Clarita. Each system's results are listed under its own name, never added to SANTA CLARITA VALLEY WATER AGENCY's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for SANTA CLARITA VALLEY WATER AGENCY is from Aug 2025.
In EPA's 2023–2026 UCMR 5 testing, SANTA CLARITA VALLEY WATER AGENCY measured lithium at up to 53.1 µg/L, which EPA counts as above its health reference level of 10 µg/L. That level is a screening value EPA uses to decide what to study further, not a legal limit, and this result does not change this page's water-quality summary.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in California
Santa Clarita Water Service Areas
What these numbers actually mean for Santa Clarita, CA
We read Santa Clarita, CA’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 4 contaminants above EPA MCLGs and 3 contaminants with an EPA health goal detected in some samples (no level on file)
- 112 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Santa Clarita
Based on Santa Clarita's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Culligan
ZeroWater
NSF Certified:
Flow Rate
1.9 gpm
Daily Production
1 gpd
Highlights:
- Compact design
- Easy to set up
- Affordable
- NSF-42, NSF-53, NSF-401 certified
Removes 19 contaminants:
+14 more
Strontium, Molybdenum, Fluoride, Uranium, Lead, Total PFAS, Chlorine, 25, Phosphorus, Bicarbonate, Calcium, Carbonate, Magnesium, Sodium
Santevia
Bath Filter
NSF Certified:
Flow Rate
0.36 gpm
Highlights:
- Organic cotton design reduces plastic used in construction
- Affordable upfront & ongoing cost
- The only bath filter that removed 100% chlorine with “normal” faster faucet flow
Removes 1 contaminants:
Waterdrop
A1
NSF Certified:
Flow Rate
1 gpm
Highlights:
- Performance certified
- Lower price than Philips
- Hot water dispensing
- Compact design
Removes 5 contaminants:
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
+14 more
Benzene, Carbofuran, Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Chlorobenzene, Cryptosporidium, Ethylbenzene, Lead, Mercury, Metolachlor, Tetrachloroethylene, Toxaphene, Turbidity
Filters for what Santa Clarita reported
Verify Your Water Quality with Independent Testing
With 4 contaminants above EPA MCLGs and 3 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
PFAS Forever Chemicals Test
$339.95
Specialized test for PFOA, PFOS, and 24 other forever chemicals. Essential for areas near military bases, airports, or industrial sites.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 4 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Santa Clarita's water readings can explain
Utility-reported data for Santa Clarita includes a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Santa Clarita, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Santa Clarita? Public-water results do not apply to private wells. See Los Angeles County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Santa Clarita
Santa Clarita's tap water measures 13.8 grains per gallon (236.0 mg/L) — very hard on the USGS scale, the range where scale on fixtures and appliances is the usual complaint.
Water softener cost for 13.8 gpg water in Santa Clarita — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For California as a whole, read water softener cost in California — priced against the plumber wage published for the state.
Frequently Asked Questions About Santa Clarita Tap Water
Santa Clarita's water has 4 contaminants above EPA MCLGs. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Santa Clarita's water.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach SANTA CLARITA VALLEY WATER AGENCY. For a problem with your water now (discolored water, no water, low pressure, a leak), contact SANTA CLARITA VALLEY WATER AGENCY directly.
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