Is Pico Rivera, CA Tap Water Safe? Quality & Contaminants

What was found in Pico Rivera's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate-Nitrite	1000000 µg/L 10000% of the EPA limit, in the worst sample — 10000 µg/L	2/2	SYR4
Nitrate	6400 µg/L 64% of the EPA limit 10000 µg/L	2/2	SYR4
Fluoride	380 µg/L 9.5% of the EPA limit 4000 µg/L	2/2	SYR4
Barium	220 µg/L 11% of the EPA limit 2000 µg/L	2/2	SYR4
TTHM	33 µg/L 41% of the EPA limit 80 µg/L	2/2	SYR4
Dibromochloromethane	14.1 µg/L No EPA limit set	2/2	SYR4
Chloroform	11.3 µg/L No EPA limit set	2/2	SYR4
Bromoform	10.9 µg/L No EPA limit set	2/2	SYR4
Combined Uranium	8.642 µg/L 29% of the EPA limit 30 µg/L	2/2	SYR4
Arsenic	6.9 µg/L 69% of the EPA limit 10 µg/L	2/2	SYR4
Bromodichloromethane	6.3 µg/L No EPA limit set	2/2	SYR4
Lead	5.8 µg/L 39% of the EPA limit 15 µg/L	1/2	SYR4
Dibromoacetic Acid	5 µg/L No EPA limit set	2/2	SYR4
Total Haloacetic Acids (HAA5)	5 µg/L 8.3% of the EPA limit 60 µg/L	2/2	SYR4
Gross Beta Particle Activity	4 pCi/L No EPA limit set	1/2	SYR4
Tetrachloroethylene	3.9 µg/L 78% of the EPA limit 5 µg/L	2/2	SYR4
Trichloroethylene	1.5 µg/L 30% of the EPA limit 5 µg/L	2/2	SYR4
Benzo(A)Pyrene	0.1000 µg/L 50% of the EPA limit 0.2000 µg/L	1/2	SYR4
PFOS	0.0300 µg/L No EPA limit set	2/2	UCMR-5
Pfpea	0.0210 µg/L No EPA limit set	2/2	UCMR-5
Pfhxa	0.0170 µg/L No EPA limit set	2/2	UCMR-5
PFOA	0.0160 µg/L No EPA limit set	2/2	UCMR-5
Pfba	0.0140 µg/L No EPA limit set	2/2	UCMR-5
Heptachlor	0.0120 µg/L 3% of the EPA limit 0.4000 µg/L	1/2	SYR4
PFBS	0.0100 µg/L No EPA limit set	2/2	UCMR-5
PFHXS	0.0057 µg/L No EPA limit set	2/2	UCMR-5
Pfda	0.0056 µg/L No EPA limit set	2/2	UCMR-5
Pfhpa	0.0041 µg/L No EPA limit set	2/2	UCMR-5
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	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 single worst sample on record — 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 Pico Rivera

Supplier	Population served
PICO RIVERA - CITY, WATER DEPT.	40,600
PICO WD	22,051

Frequently asked questions about Pico Rivera tap water

Is Pico Rivera tap water safe to drink?

EPA testing detected 29 contaminants in the water serving Pico Rivera. 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 Pico Rivera?

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

What contaminants are in Pico Rivera's water?

The contaminants EPA monitoring detected in Pico Rivera include Nitrate-Nitrite, Nitrate, Fluoride, Barium, TTHM. The full list, with the highest level found 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.