Water Quality Report · Updated May 12, 2026
VALLEY COUNTY WATER DIST.
VALLEY COUNTY WATER DIST. delivers tap water graded F (48/100) by TapWaterSafety.org. The utility serves approximately 68,871 residents in BALDWIN PARK, California using groundwater. 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. For questions, the utility can be reached at 626-338-7301.
Is BALDWIN PARK tap water safe to drink?
VALLEY COUNTY WATER DIST. delivers tap water that earns a grade of F (48/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 68,871 residents in BALDWIN PARK, drawing from groundwater.
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA5), Perfluorohexane sulfonate (PFHXS), Chromium (hexavalent), Total trihalomethanes (TTHMs), Dibromoacetic acid, Dibromochloromethane, Bromodichloromethane, Nitrate and nitrite, Nitrate, Uranium, Bromoform, Haloacetic acids (HAA9), Perfluorooctanoic acid (PFOA), 1,2,3-Trichloropropane. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for BALDWIN PARK residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for VALLEY COUNTY WATER DIST..
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.
Contact VALLEY COUNTY WATER DIST.
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for BALDWIN PARK
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 48/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
VALLEY COUNTY WATER DIST. service area
This water system serves 1 community in Los Angeles County, California. Click any city for its dedicated tap water quality page.
Find the right filter for BALDWIN PARK water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.