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Tap water quality report

Santa Clarita, CA

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Santa Clarita. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
344
people served
13
contaminants found
California rankings Lead in California PFAS in California

What was found in Santa Clarita's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
975000 µg/L 9750%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
2/2 SYR4
Nitrate
1017 µg/L 10%
of the EPA limit 10000 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2016
Highest in the city: 11910.2 µg/L — SLEEPY VALLEY WATER COMPANY · 160 people · 2019
2/2 SYR4
Fluoride
4200 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 4000 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
2/2 SYR4
Barium
83.46 µg/L 4.2%
of the EPA limit 2000 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
Highest in the city: 94.39 µg/L — SLEEPY VALLEY WATER COMPANY · 160 people · 2017
2/2 SYR4
Copper
29.5 µg/L 2.3%
of the EPA limit 1300 µg/L
Highest in the city: SLEEPY VALLEY WATER COMPANY · 160 people · 2017
1/2 SYR4
Combined Uranium
3.57064 µg/L 12%
of the EPA limit 30 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
Highest in the city: 8.15105 µg/L — SLEEPY VALLEY WATER COMPANY · 160 people · 2019
2/2 SYR4
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
Highest in the city: 5 µg/L — SLEEPY VALLEY WATER COMPANY · 160 people · 2017
2/2 SYR4
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
1/2 SYR4
Chromium
4 µg/L 4%
of the EPA limit 100 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
2/2 SYR4
Toluene
3.9 µg/L 0.4%
of the EPA limit 1000 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2016
1/2 SYR4
Lead
3.23 µg/L 22%
of the EPA limit 15 µg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2014
1/2 SYR4
Combined Radium (-226 And -228)
0.2281 pCi/L 4.6%
of the EPA limit 5 pCi/L
Highest in the city: SLEEPY VALLEY WATER COMPANY · 160 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA · 184 people · 2025
2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Santa Clarita

SupplierPopulation served
LOS ANGELES RESIDENTIAL COMMUNITY FOUNDA 184
SLEEPY VALLEY WATER COMPANY 160

Frequently asked questions about Santa Clarita tap water

Is Santa Clarita tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Santa Clarita. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Santa Clarita?

2 public water suppliers report drinking-water monitoring for Santa Clarita, California to the EPA. Each is listed above with its population served.

What contaminants are in Santa Clarita's water?

The contaminants EPA monitoring detected in Santa Clarita include Nitrate-Nitrite, Nitrate, Fluoride, Barium, Copper. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.