Is Caruthers, CA Tap Water Safe? Quality & Contaminants

What was found in Caruthers'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	4587.8 µg/L 46% of the EPA limit 10000 µg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 people · 2019	2/2	SYR4
Nitrate-Nitrite	920 µg/L 9.2% of the EPA limit 10000 µg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 people · 2017 Highest in the city: 3700 µg/L — RAU DAIRY · 105 people · 2019	2/2	SYR4
Fluoride	237.5 µg/L 5.9% of the EPA limit 4000 µg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 people · 2017	2/2	SYR4
Arsenic	25.4 µg/L 254% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 people · 2019	2/2	SYR4
Copper	5.6 µg/L 0.4% of the EPA limit 1300 µg/L Highest in the city: RAU DAIRY · 105 people · 2019	1/2	SYR4
Barium	4.5 µg/L 0.2% of the EPA limit 2000 µg/L Highest in the city: RAU DAIRY · 105 people · 2019	1/2	SYR4
Chromium	3.7 µg/L 3.7% of the EPA limit 100 µg/L Highest in the city: RAU DAIRY · 105 people · 2019	1/2	SYR4
Antimony, Total	3.4 µg/L 57% of the EPA limit 6 µg/L Highest in the city: RAU DAIRY · 105 people · 2019	1/2	SYR4
Cadmium	0.2500 µg/L 5% of the EPA limit 5 µg/L Highest in the city: RAU DAIRY · 105 people · 2019	1/2	SYR4
1,2-DIBROMO-3-CHLOROPROPANE	0.1710 µg/L 86% of the EPA limit 0.2000 µg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 people · 2019	1/2	SYR4
Ethylene Dibromide	0.1693 µg/L 339% of the EPA limit, at the 95th percentile of samples — 0.0500 µg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 people · 2019	1/2	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CARUTHERS COMM SERV DIST · 2,613 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 Caruthers

Supplier	Population served
CARUTHERS COMM SERV DIST	2,613
RAU DAIRY	105

Frequently asked questions about Caruthers tap water

Is Caruthers tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Caruthers. 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 Caruthers?

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

What contaminants are in Caruthers's water?

The contaminants EPA monitoring detected in Caruthers include Nitrate, Nitrate-Nitrite, Fluoride, Arsenic, 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.