Drinking water quality · 2026
· Verified
What's in Tracy, City of, CA tap water
31 contaminants were measured in the Tracy, City of, CA water system's 2026 annual report. Each is shown below against its federal limit.
- Reporting year
- 2026
- Contaminants measured
- 31
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound detected in Tracy, City of, CA
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
Lithium
● Detected (no federal limit)below national p90 (76.59999999999991 mg/L across detecting U.S. systems)
Where your water comes from · EPA SDWIS
Tracy, City of, CA's drinking water comes from ground water, drawn from 10 sources.
Source
- PRODUCTION · 8
- WELL 04R - NEW LINCOLN PARK WELL
- DMC - RAW
Treatment
- PRODUCTION WELL 01 - TREATED
- PRODUCTION WELL 05 - TREATED
- PRODUCTION WELL 06 - TREATED
- + 6 more
Distribution
Also buys water from SOUTH SAN JOAQUIN IRRIGATION DISTRICT.
Historical readings · EPA Six-Year Review (2012–2019)
1 contaminant historically over EPA limits in Tracy, City of, CA
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
TTHM worst: 2015 | 0.12 mg/L 1.5× | 0.08 mg/L | '12'13'14'15'16'17'18'19 |
HAA5 worst: 2019 | 0.05 mg/L 83% | 0.06 mg/L | '12'13'14'15'16'17'18'19 |
ARSENIC worst: 2014 | 0.0056 mg/L within below national p90 | 0.01 mg/L | '12'13'14'15'16'17'18 |
NITRATE worst: 2019 | 3.6 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE NITRITE worst: 2019 | 3.6 mg/L within | 10 mg/L | '16'17'18'19 |
DICHLOROMETHANE worst: 2017 | 0.0014 mg/L within | 0.005 mg/L | '12'13'16'17 |
FLUORIDE worst: 2016 | 0.3 mg/L within | 4 mg/L | '12'13'14'15'16'17'18 |
URANIUM worst: 2016 | 0.00238 ug/L within below national p90 | 30 ug/L | '14'16 |
TCAA worst: 2012 | 0.0078 mg/L | — | '12'13'14'15'16'17'18'19 |
DBAA worst: 2012 | 0.0057 mg/L | — | '12'13'14'15'16'17'18'19 |
DCAA worst: 2012 | 0.013 mg/L | — | '12'13'14'15'16'17'18'19 |
MBAA worst: 2014 | 0.001 mg/L | — | '14'19 |
MCAA worst: 2019 | 0.0021 mg/L | — | '19 |
BROMODICHLOROMETHANE worst: 2012 | 0.016 mg/L | — | '12'13'14'15'16'17'18'19 |
BROMOFORM worst: 2012 | 0.016 mg/L | — | '12'13'14'15'16'17'18'19 |
CHLOROFORM worst: 2012 | 0.022 mg/L | — | '12'13'14'15'16'17'18'19 |
DIBROMOCHLOROMETHANE worst: 2012 | 0.028 mg/L | — | '12'13'14'15'16'17'18'19 |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid, a chlorinated PFAS compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)ADONA, a newer-generation PFAS replacement compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 4:2 Fluorotelomer sulfonic acid (4:2 FTS)4:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 6:2 Fluorotelomer sulfonic acid (6:2 FTS)6:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 8:2 Fluorotelomer sulfonic acid (8:2 FTS)8:2 fluorotelomer sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid, a chlorinated PFAS compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoro-3-methoxypropanoic acid (PFMPA)Perfluoro-3-methoxypropanoic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoro-4-methoxybutanoic acid (PFMBA)Perfluoro-4-methoxybutanoic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA)Perfluoro(2-ethoxyethane)sulfonic acid, a PFAS-related compound. | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorododecanoic acid (PFDoA)Perfluorododecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroheptanesulfonic acid (PFHpS)Perfluoroheptanesulfonic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoropentanesulfonic acid (PFPeS)Perfluoropentanesulfonic acid, a PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoropentanoic acidPerfluoropentanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| Perfluoroundecanoic acid (PFUnA)Perfluoroundecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
| PFBAPerfluorobutanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detected NG/LHighest single sampleSource water | None set | None detected |
People also ask about Tracy, City of, CA's water
+Is Tracy, City of, CA tap water safe to drink in 2026?
Every one of the 31 contaminants measured in Tracy, City of, CA's 2026 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Tracy, City of, CA tap water?
31 contaminants were measured in Tracy, City of, CA's 2026 Consumer Confidence Report, spanning pfas ("forever chemicals"), disinfection byproducts, and other. 2 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Tracy, City of, CA's 2026 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Tracy, City of, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2026 report; a new report will replace it once the utility publishes its next annual update.