Tap Water Quality Report
Tap water quality in AUBURN, California
Tap water in AUBURN, California receives a grade of B (80/100) from TapWaterSafety.org. It's served by PLACER CWA - FOOTHILL. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in AUBURN's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving AUBURN.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 28.1 ppb, 468x above the EWG health guideline of 0.06 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.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 39.3 ppb, 262x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for PLACER CWA - FOOTHILL (system ID CA3110025) 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 AUBURN
Filters matched to the specific contaminants in AUBURN's water supply.
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 AUBURN'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 |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
28.1 ppb | 0.06 | — | — | — | — | — | 468× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
39.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 262× over |
| Trichloroacetic acid Disinfection byproduct |
15.7 ppb | 0.1 | — | — | — | — | — | 157× over |
| Chloroform Disinfection byproduct |
37.2 ppb | 0.4 | — | — | — | — | — | 93× over |
| Dichloroacetic acid Disinfection byproduct |
11.4 ppb | 0.2 | — | — | — | — | — | 57× over |
| Bromodichloromethane Disinfection byproduct |
2.02 ppb | 0.06 | — | — | — | — | — | 34× over |
| Chromium (hexavalent) Heavy metal |
0.0854 ppb | 0.02 | — | — | — | — | — | 4.3× over |
| Nitrate Inorganic |
0.383 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.7× over |
| Chlorate Disinfection byproduct |
250.0 ppb | 210.0 | — | — | — | — | — | 1.2× over |
| Aluminum Heavy metal |
8.54 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Selenium Heavy metal |
0.408 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Vanadium Other |
0.246 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.28 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0298 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0402 ppb | 1500.0 | — | — | — | — | — | 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 PLACER CWA - FOOTHILL.