Tap WaterIndex

← California

Tap water quality report

Perris, CA

EPA monitoring detected 28 contaminants across the 1 water supplier serving Perris. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
666,581
people served
28
contaminants found
California rankings Lead in California PFAS in California

What was found in Perris's water

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

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
930000 µg/L 9300%
of the EPA limit, in the worst sample — 10000 µg/L
 1/1 SYR4
Nitrate
13000 µg/L 130%
of the EPA limit, in the worst sample — 10000 µg/L
 1/1 SYR4
Barium
1450 µg/L 73%
of the EPA limit 2000 µg/L
 1/1 SYR4
Fluoride
1300 µg/L 33%
of the EPA limit 4000 µg/L
 1/1 SYR4
Copper
150 µg/L 12%
of the EPA limit 1300 µg/L
 1/1 SYR4
TTHM
120 µg/L 150%
of the EPA limit, in the worst sample — 80 µg/L
 1/1 SYR4
Chloroform
72 µg/L
No EPA limit set
 1/1 SYR4
Bromoform
70 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
70 µg/L 117%
of the EPA limit, in the worst sample — 60 µg/L
 1/1 SYR4
Dibromochloromethane
54 µg/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
53 µg/L
No EPA limit set
 1/1 SYR4
Lithium
39 µg/L
No EPA limit set
 1/1 UCMR-5
Dichloroacetic Acid
29 µg/L
No EPA limit set
 1/1 SYR4
Combined Uranium
28.459 µg/L 95%
of the EPA limit 30 µg/L
 1/1 SYR4
Trichloroacetic Acid
28 µg/L
No EPA limit set
 1/1 SYR4
Bromodichloromethane
26 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
20 µg/L
No EPA limit set
 1/1 SYR4
Lead
15 µg/L 100%
of the EPA limit 15 µg/L
 1/1 SYR4
Gross Beta Particle Activity
13.3 pCi/L
No EPA limit set
 1/1 SYR4
Arsenic
13 µg/L 130%
of the EPA limit, in the worst sample — 10 µg/L
 1/1 SYR4
Selenium
12 µg/L 24%
of the EPA limit 50 µg/L
 1/1 SYR4
Cyanide
10.1 µg/L 5.1%
of the EPA limit 200 µg/L
 1/1 SYR4
Monobromoacetic Acid
7.4 µg/L
No EPA limit set
 1/1 SYR4
Tetrachloroethylene
2.5 µg/L 50%
of the EPA limit 5 µg/L
 1/1 SYR4
Trichloroethylene
1.3 µg/L 26%
of the EPA limit 5 µg/L
 1/1 SYR4
Nitrite
0.5000 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/1 SYR4
Cadmium
0.3900 µg/L 7.8%
of the EPA limit 5 µg/L
 1/1 SYR4
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
 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 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 Perris

SupplierPopulation served
EASTERN MUNICIPAL WD 666,581

Frequently asked questions about Perris tap water

Is Perris tap water safe to drink?

EPA testing detected 28 contaminants in the water serving Perris. 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 Perris?

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

What contaminants are in Perris's water?

The contaminants EPA monitoring detected in Perris include Nitrate-Nitrite, Nitrate, Barium, Fluoride, Copper. 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.