Tap Water Quality Report
Tap water quality in TRACY, California
Tap water in TRACY, California receives a grade of D (61/100) from TapWaterSafety.org. It's served by TRACY, CITY OF. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in TRACY's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving TRACY.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 1.33 ppt, 1333x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 30.8 ppb, 513x 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.
Arsenic detected
Moderate concernArsenic detected at 0.2 ppb.
Recommended filters for TRACY
Filters matched to the specific contaminants in TRACY's 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.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
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 TRACY'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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS) PFAS |
1.33 ppt | 0.001 | 10.0 | — | — | — | — | 1333× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
30.8 ppb | 0.06 | — | — | — | — | — | 513× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
36.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 245× over |
| Trichloroacetic acid Disinfection byproduct |
12.2 ppb | 0.1 | — | — | — | — | — | 122× over |
| Chromium (hexavalent) Heavy metal |
2.22 ppb | 0.02 | — | — | — | — | — | 111× over |
| Bromodichloromethane Disinfection byproduct |
4.47 ppb | 0.06 | — | — | — | — | — | 74× over |
| Chloroform Disinfection byproduct |
26.3 ppb | 0.4 | — | — | — | — | — | 66× over |
| Dichloroacetic acid Disinfection byproduct |
11.0 ppb | 0.2 | — | — | — | — | — | 55× over |
| Arsenic Heavy metal |
0.2 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 50× over |
| Dibromochloromethane Disinfection byproduct |
3.51 ppb | 0.1 | — | — | — | — | — | 35× over |
| Dibromoacetic acid Disinfection byproduct |
0.915 ppb | 0.03 | — | — | — | — | — | 30× over |
| Perfluorooctanoic acid (PFOA) PFAS |
1.08 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 12× over |
| Nitrate Inorganic |
1.2 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 8.6× over |
| Nitrate and nitrite Inorganic |
1.14 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 8.1× over |
| Bromoform Disinfection byproduct |
2.35 ppb | 0.5 | — | — | — | — | — | 4.7× over |
| Chlorate Disinfection byproduct |
156.0 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
3.08 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
14.0 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Bromochloromethane Other |
0.0063 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.51 ppb | 40.0 | — | — | — | — | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.00465 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Barium Heavy metal |
4.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.272 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.683 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.187 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.973 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.062 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.0875 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
4.36 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 TRACY, CITY OF.