Tap Water Quality Report
Tap water quality in BALDWIN PARK, California
Tap water in BALDWIN PARK, California receives a grade of F (57/100) from TapWaterSafety.org. It's served by VALLEY COUNTY WATER DIST.. 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 BALDWIN PARK's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving BALDWIN PARK.
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 1.48 ppb, 370x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 35.2 ppb, 352x above the EWG health guideline of 0.1 ppb.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.332 ppt, 332x above the EWG health guideline of 0.001 ppt.
EPA compliance record
Official U.S. EPA records for VALLEY COUNTY WATER DIST. (system ID CA1910009) 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 BALDWIN PARK
Filters matched to the specific contaminants in BALDWIN PARK'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 BALDWIN PARK'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 |
1.48 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 370× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
35.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 352× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.332 ppt | 0.001 | 10.0 | — | — | — | — | 332× over |
| Chromium (hexavalent) Heavy metal |
0.72 ppb | 0.02 | — | — | — | — | — | 36× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
3.92 ppb | 0.15 | 80.0 | 100 | — | — | — | 26× over |
| Dibromoacetic acid Disinfection byproduct |
0.684 ppb | 0.03 | — | — | — | — | — | 23× over |
| Dibromochloromethane Disinfection byproduct |
1.56 ppb | 0.1 | — | — | — | — | — | 16× over |
| Bromodichloromethane Disinfection byproduct |
0.543 ppb | 0.06 | — | — | — | — | — | 9.0× over |
| Nitrate and nitrite Inorganic |
1.07 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 7.6× over |
| Nitrate Inorganic |
0.902 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.4× over |
| Uranium Radiological |
2.11 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 4.9× over |
| Bromoform Disinfection byproduct |
1.82 ppb | 0.5 | — | — | — | — | — | 3.6× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
0.177 ppb | 0.06 | — | — | — | — | — | 2.9× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.232 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 2.6× over |
| 1,2,3-Trichloropropane Other |
0.0011 ppb | 0.0007 | — | — | — | — | — | 1.6× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.258 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Chloroform Disinfection byproduct |
0.14 ppb | 0.4 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
62.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
115.8 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
1.75 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Dichloroacetic acid Disinfection byproduct |
0.0135 ppb | 0.2 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.39 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Tetrachloroethylene (perchloroethylene) Volatile organic compound |
0.00109 ppb | 0.06 | 5.0 | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
2.55 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
2.36 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.141 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.000389 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.631 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.495 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.235 ppm | — | 4.0 | 1.5 | 1.5 | — | — | 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 VALLEY COUNTY WATER DIST..