Water Quality: Tracy, CA
9 water systems • 97,899 people served
Multiple Health ViolationsWater Quality Summary
Tracy is served by 9 public water systems with a combined service population of 97,899 people, and has 45 EPA Safe Drinking Water Act violations on record. Critically, 12 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Tracy's violation count is 6% below the national average for California. Contaminants associated with violations include Barium, E. coli, Fecal Coliform, Gross Alpha, Stage 2 DBP.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Indicates direct fecal contamination; associated with diarrhea, cramps, nausea, and potential severe illness.
Common source: Human and animal fecal waste
EPA limit: Zero tolerance (any positive triggers violations)
Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.
Common source: Natural uranium and radium in geological formations
EPA limit: 15 pCi/L (excluding radon and uranium)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving Tracy
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| TRACY, CITY OF | CA3910011 | Surface Water | 96,609 | 4 |
| SAN JOAQUIN RIVER CLUB INC | CA3910018 | Groundwater | 600 | 2 |
| 132 INVESTMENTS WATER SYSTEM | CA3901031 | Groundwater | 252 | 7 |
| BUEHNER WATER SYSTEM | CA5000313 | Groundwater | 150 | 4 |
| CURRIER ESTATES WATER CORP | CA3900701 | Groundwater | 148 | 5 |
| LA TORRES PARK | CA3900991 | Groundwater | 40 | 8 |
| LODI HOMES | CA3900837 | Groundwater | 39 | 8 |
| MAZE BLVD MOBILEHOME PARK | CA5000041 | Groundwater | 36 | 1 |
| BUEHNER HOUSES | CA5000297 | Groundwater | 25 | 6 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in California
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.