Is Corral De Tierra, CA Tap Water Safe? Quality & Contaminants

What was found in Corral De Tierra'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate-Nitrite	95030 µg/L 950% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Fluoride	300 µg/L 7.5% of the EPA limit 4000 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Nitrate	200 µg/L 2% of the EPA limit 10000 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Nitrite	95.02 µg/L 9.5% of the EPA limit 1000 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Arsenic	28 µg/L 280% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Cadmium	23.4 µg/L 468% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Barium	23.36 µg/L 1.2% of the EPA limit 2000 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Chromium	16.79 µg/L 17% of the EPA limit 100 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Toluene	14 µg/L 1.4% of the EPA limit 1000 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Copper	5 µg/L 0.4% of the EPA limit 1300 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Selenium	2.18 µg/L 4.4% of the EPA limit 50 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Combined Uranium	1.49 µg/L 5% of the EPA limit 30 µg/L Main supplier: VISTA DEL TORO WS · 92 people · 2019	1/1	SYR4
Lead	0.0050 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: VISTA DEL TORO WS · 92 people · 2020	1/1	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 Corral De Tierra

Supplier	Population served
VISTA DEL TORO WS	92

Frequently asked questions about Corral De Tierra tap water

Is Corral De Tierra tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Corral De Tierra. 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 Corral De Tierra?

1 public water supplier report drinking-water monitoring for Corral De Tierra, California to the EPA. Each is listed above with its population served.

What contaminants are in Corral De Tierra's water?

The contaminants EPA monitoring detected in Corral De Tierra include Nitrate-Nitrite, Fluoride, Nitrate, Nitrite, Arsenic. 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.