Drinking water quality · 2024
· Verified
What's in City of Pittsburg, CA tap water
15 contaminants were measured in the City of Pittsburg, CA water system's 2024 annual report. Each is shown below against its federal limit — 2 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 15
- Over federal limit
- 2
- Approaching the limit
- 1
- Worst contaminant
- Chromium, Hexavalent
- Service area
- CA
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound detected in City of Pittsburg, 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
City of Pittsburg, CA's drinking water comes from ground water, drawn from 2 sources.
Source
- BODEGA WELL
- DOVER WELL
Treatment
- PITTSBURG WTP
Distribution
Also buys water from CONTRA COSTA WATER DISTRICT.
Historical readings · EPA Six-Year Review (2012–2019)
1 contaminant historically over EPA limits in City of Pittsburg, 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) |
|---|---|---|---|
GROSS BETA worst: 2017 | 7.63 mrem/yr 1.9× | 4 mrem/yr | '17 |
ARSENIC worst: 2014 | 0.0085 mg/L 85% near national p90 | 0.01 mg/L | '12'13'14'16'17'18'19 |
DICHLOROMETHANE worst: 2017 | 0.0034 mg/L within | 0.005 mg/L | '17 |
TTHM worst: 2019 | 0.0351 mg/L within | 0.08 mg/L | '18'19 |
CADMIUM worst: 2017 | 0.0016 mg/L within near national p90 | 0.005 mg/L | '17 |
NITRATE worst: 2014 | 2.71 mg/L within | 10 mg/L | '12'13'14'15'16'17'18'19 |
HAA5 worst: 2018 | 0.0134 mg/L within | 0.06 mg/L | '18'19 |
NITRATE NITRITE worst: 2017 | 2.1 mg/L within | 10 mg/L | '17'18 |
SELENIUM worst: 2014 | 0.0088 mg/L within | 0.05 mg/L | '14'17 |
FLUORIDE worst: 2018 | 0.62 mg/L within | 4 mg/L | '12'14'17'18'19 |
BARIUM worst: 2012 | 0.16 mg/L within near national p90 | 2 mg/L | '12'14'16'17'18'19 |
DEHP worst: 2019 | 0.00028 mg/L within | 0.006 mg/L | '19 |
CYANIDE worst: 2018 | 0.0011 mg/L within below national p90 | 0.2 mg/L | '18 |
DEHA worst: 2019 | 0.00021 mg/L within | 0.4 mg/L | '19 |
URANIUM worst: 2017 | 0.0104 ug/L within below national p90 | 30 ug/L | '12'14'17 |
COPPER worst: 2019 | 0.32 mg/L below national p90 | — | '19 |
LEAD worst: 2019 | 0.0028 mg/L | — | '19 |
DBAA worst: 2018 | 0.0051 mg/L | — | '18'19 |
DCAA worst: 2018 | 0.0053 mg/L | — | '18'19 |
MCAA worst: 2019 | 0.0035 mg/L | — | '19 |
TCAA worst: 2018 | 0.0037 mg/L | — | '18'19 |
BROMODICHLOROMETHANE worst: 2018 | 0.0111 mg/L | — | '18'19 |
BROMOFORM worst: 2018 | 0.0053 mg/L | — | '18'19 |
CHLOROFORM worst: 2018 | 0.00732 mg/L | — | '18'19 |
DIBROMOCHLOROMETHANE worst: 2018 | 0.0119 mg/L | — | '18'19 |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0.11 ug/LAverageSystem-wide | 0.02 ug/LMCLG | At or above the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 0.06 mg/LAverageSystem-wide | 0.6 mg/LMCLG | Within the limit |
Disinfection byproducts
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChloramineA longer-lasting disinfectant made by combining chlorine with ammonia. | 2.6 mg/LRunning annual avgHighest Quarterly | 4 mg/LMCLG | Within the limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total ColiformA group of bacteria used as an indicator of overall water-system sanitation. | 0.5 %AverageSystem-wide | 5 %MCL | Within the limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.44 NTURangeSystem-wide | 95 NTUMCL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Asbestos | Not detected MFLAverageSystem-wide | 7 MFLMCLG | Within the limit |
People also ask about City of Pittsburg, CA's water
+Is City of Pittsburg, CA tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the City of Pittsburg, CA water utility lists 2 contaminants at or above the federal limit: Chromium, Hexavalent and Chlorite. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in City of Pittsburg, CA tap water?
15 contaminants were measured in City of Pittsburg, CA's 2024 Consumer Confidence Report, spanning metals, disinfection byproducts, and inorganic chemicals. 14 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in City of Pittsburg, CA tap water?
2 contaminants in City of Pittsburg, CA's 2024 report sit at or above the federal limit: Chromium, Hexavalent (5.5× the limit); Chlorite (4.0× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in City of Pittsburg, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Chromium, Hexavalent, at 5.5× the federal threshold. It belongs to the metals family of contaminants.
+Are any contaminants in City of Pittsburg, CA tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Fluoride. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+Where does the data on this page come from?
Every value is transcribed from City of Pittsburg, CA's 2024 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 City of Pittsburg, 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 2024 report; a new report will replace it once the utility publishes its next annual update.