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Tap water quality report

King City, CA

EPA monitoring detected 13 contaminants across the 2 water suppliers serving King City. 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
215
people served
13
contaminants found
California rankings Lead in California PFAS in California

What was found in King City'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
3100 µg/L 31%
of the EPA limit 10000 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2016
1/2 SYR4
Nitrate
200 µg/L 2%
of the EPA limit 10000 µg/L
Main supplier: CALIFORNIA ORCHARD WS · 150 people · 2019
Highest in the city: 3000 µg/L — HIDDEN VIEWS MHP WS · 65 people · 2019
2/2 SYR4
Fluoride
340 µg/L 8.5%
of the EPA limit 4000 µg/L
Main supplier: CALIFORNIA ORCHARD WS · 150 people · 2012
2/2 SYR4
Nitrite
300 µg/L 30%
of the EPA limit 1000 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2018
1/2 SYR4
Barium
151 µg/L 7.6%
of the EPA limit 2000 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2016
1/2 SYR4
Copper
79 µg/L 6.1%
of the EPA limit 1300 µg/L
Main supplier: CALIFORNIA ORCHARD WS · 150 people · 2015
2/2 SYR4
Selenium
26.4 µg/L 53%
of the EPA limit 50 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2016
1/2 SYR4
Combined Uranium
22.0073 µg/L 73%
of the EPA limit 30 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2019
1/2 SYR4
Chromium
12.25 µg/L 12%
of the EPA limit 100 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2019
1/2 SYR4
Arsenic
3.95 µg/L 40%
of the EPA limit 10 µg/L
Main supplier: CALIFORNIA ORCHARD WS · 150 people · 2017
Highest in the city: 11.38 µg/L — HIDDEN VIEWS MHP WS · 65 people · 2018
2/2 SYR4
Cyanide
6 µg/L 3%
of the EPA limit 200 µg/L
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2016
1/2 SYR4
Asbestos
0.1980 MFL 2.8%
of the EPA limit 7 MFL
Highest in the city: HIDDEN VIEWS MHP WS · 65 people · 2012
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: CALIFORNIA ORCHARD WS · 150 people · 2023
Highest in the city: 0.0133 mg/L — HIDDEN VIEWS MHP WS · 65 people · 2024
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 King City

SupplierPopulation served
CALIFORNIA ORCHARD WS 150
HIDDEN VIEWS MHP WS 65

Frequently asked questions about King City tap water

Is King City tap water safe to drink?

EPA testing detected 13 contaminants in the water serving King City. 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 King City?

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

What contaminants are in King City's water?

The contaminants EPA monitoring detected in King City include Nitrate-Nitrite, Nitrate, Fluoride, Nitrite, Barium. 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.