Tap Water Quality Report
Tap water quality in PERRIS, California
Tap water in PERRIS, California receives a grade of F (51/100) from TapWaterSafety.org. It's served by EASTERN MUNICIPAL WD. The most significant water quality concerns are: PFAS contamination; Arsenic significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Perfluorohexane sulfonate (PFHXS) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in PERRIS's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving PERRIS.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.43 ppb, 609x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.341 ppt, 341x above the EWG health guideline of 0.001 ppt.
EPA compliance record
Official U.S. EPA records for EASTERN MUNICIPAL WD (system ID CA3310009) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for PERRIS
Filters matched to the specific contaminants in PERRIS's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in PERRIS's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
2.43 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 609× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.341 ppt | 0.001 | 10.0 | — | — | — | — | 341× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
11.7 ppb | 0.06 | — | — | — | — | — | 195× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
27.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 186× over |
| Bromodichloromethane Disinfection byproduct |
8.27 ppb | 0.06 | — | — | — | — | — | 138× over |
| Dibromochloromethane Disinfection byproduct |
8.57 ppb | 0.1 | — | — | — | — | — | 86× over |
| Dibromoacetic acid Disinfection byproduct |
1.53 ppb | 0.03 | — | — | — | — | — | 51× over |
| Chromium (hexavalent) Heavy metal |
0.316 ppb | 0.02 | — | — | — | — | — | 16× over |
| Trichloroacetic acid Disinfection byproduct |
1.57 ppb | 0.1 | — | — | — | — | — | 16× over |
| Chloroform Disinfection byproduct |
6.05 ppb | 0.4 | — | — | — | — | — | 15× over |
| Bromoform Disinfection byproduct |
4.96 ppb | 0.5 | — | — | — | — | — | 9.9× over |
| Dichloroacetic acid Disinfection byproduct |
1.84 ppb | 0.2 | — | — | — | — | — | 9.2× over |
| Nitrate Inorganic |
0.915 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.5× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.462 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 5.1× over |
| Nitrate and nitrite* Inorganic |
0.287 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.0× over |
| Radium, combined (-226 and -228)* Radiological |
0.07 pCi/L | 0.05 | 5.0 | — | — | — | — | 1.4× over |
| Uranium Radiological |
0.59 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 1.4× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.267 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Chlorate Disinfection byproduct |
109.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
6.8 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perchlorate Disinfection byproduct |
0.191 ppb | 1.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
4.92 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
42.9 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Selenium Heavy metal |
0.369 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
10.9 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
8.28 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.00217 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Manganese Heavy metal |
0.526 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Aluminum Heavy metal |
2.93 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
4.03 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.045 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.79 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.67 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.428 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.083 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.0209 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
5.03 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from EASTERN MUNICIPAL WD.