Drinking water quality · 2023
· Verified
What's in City of Pittsburg, CA tap water
72 contaminants were measured in the City of Pittsburg, CA water system's 2023 annual report. Each is shown below against its federal limit — 5 sit at or above that limit.
- Reporting year
- 2023
- Contaminants measured
- 72
- Over federal limit
- 5
- Approaching the limit
- 0
- Worst contaminant
- Manganese
- Service area
- CA
- ManganeseMetals · Average255 UG/Llimit 50 UG/L · 5.1× the limit
- IronMetals · Average820 UG/Llimit 300 UG/L · 2.7× the limit
- Total Dissolved SolidsPhysical & aggregate · Average1300 MG/Llimit 1000 MG/L · 1.3× the limit
- Specific ConductancePhysical & aggregate · Average2000 UMHO/CMlimit 1600 UMHO/CM · 1.3× the limit
- ColorPhysical & aggregate · Average15 UNITSlimit 15 UNITS · 1.0× the limit
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 |
MCAA worst: 2019 | 0.0035 mg/L | — | '19 |
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 |
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 |
|---|---|---|---|
| ManganeseA naturally occurring metal from soil and rock. | 255 UG/LAverageSource water | 50 UG/LMCL | At or above the limit |
| IronA naturally occurring metal common in groundwater. | 820 UG/LAverageSource water | 300 UG/LMCL | At or above the limit |
| AluminumA common element sometimes used as a treatment coagulant. | 50.666666666666664 UG/LAverageSource water | 1000 UG/LMCL | Within the limit |
| Antimony | Not detected UG/LHighest single sampleSource water | 6 UG/LMCL | None detected |
| Beryllium | Not detected UG/LHighest single sampleEntry point | 4 UG/LMCL | None detected |
| MercuryA toxic metal from erosion of natural deposits and industrial runoff. | Not detected UG/LHighest single sampleSource water | 2 UG/LMCL | None detected |
| NickelA metal from natural deposits and industrial discharge. | Not detected UG/LHighest single sampleEntry point | 100 UG/LMCL | None detected |
| Thallium | Not detected UG/LHighest single sampleEntry point | 2 UG/LMCL | None detected |
| ZincA naturally occurring metal that can also enter water from corroding pipes. | Not detected UG/LHighest single sampleEntry point | 5000 UG/LMCL | None detected |
| CalciumA naturally occurring mineral that contributes to water hardness. | 63 MG/LAverageSource water | None set | Detected — no federal limit |
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 61.5 MG/LAverageSource water | None set | Detected — no federal limit |
| PotassiumA naturally occurring mineral from rock and soil. | 9.6 MG/LAverageSource water | None set | Detected — no federal limit |
| SodiumA naturally occurring salt component. | 180 MG/LAverageSource water | None set | Detected — no federal limit |
| Vanadium | 7 UG/LAverageSource water | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 1300 MG/LAverageSource water | 1000 MG/LMCL | At or above the limit |
| Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content. | 2000 UMHO/CMAverageSource water | 1600 UMHO/CMMCL | At or above the limit |
| ColorA measure of visible tint in the water. | 15 UNITSAverageSource water | 15 UNITSMCL | At or above the limit |
| TurbidityA measure of cloudiness from suspended particles in the water. | 3 NTUAverageSource water | 5 NTUMCL | Within the limit |
| OdorA measure of detectable smell in the water. | Not detected TONHighest single sampleSource water | 3 TONMCL | None detected |
| AlkalinityA measure of the water's capacity to neutralize acids. | 180.33333333333334 MG/LAverageSource water | None set | Detected — no federal limit |
| HardnessA measure of dissolved calcium and magnesium minerals. | 560 MG/LAverageSource water | None set | Detected — no federal limit |
| pHA measure of how acidic or basic the water is. | 8.4 PHAverageEntry point | None set | Detected — no federal limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| SulfateA naturally occurring mineral from rock and soil. | 360 MG/LAverageSource water | 500 MG/LMCL | Within the limit |
| ChlorideA naturally occurring salt compound. | 335 MG/LAverageSource water | 500 MG/LMCL | Within the limit |
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected MG/LHighest single sampleSource water | 1 MG/LMCL | None detected |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 8.865 PCI/LAverageSource water | 15 PCI/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | Not detected PCI/LHighest single sampleEntry point | None set | None detected |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | Not detected UG/LHighest single sampleEntry point | 6 UG/LMCL | None detected |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Carbon Tetrachloride | Not detected UG/LHighest single sampleEntry point | 0.5 UG/LMCL | None detected |
| Chlorobenzene | Not detected UG/LHighest single sampleSource water | 70 UG/LMCL | None detected |
| Chromium | Not detected UG/LHighest single sampleSource water | 50 UG/LMCL | None detected |
| Cis Dichloroethylene 12 | Not detected UG/LHighest single sampleSource water | 6 UG/LMCL | None detected |
| Dichloroethane 12 | Not detected UG/LHighest single sampleSource water | 0.5 UG/LMCL | None detected |
| Dichloroethylene 11 | Not detected UG/LHighest single sampleEntry point | 6 UG/LMCL | None detected |
| Dichloropropane 12 | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Mbaa | Not detected UG/LHighest single sampleDistribution | None set | None detected |
| O Dichlorobenzene | Not detected UG/LHighest single sampleSource water | 600 UG/LMCL | None detected |
| P Dichlorobenzene | Not detected UG/LHighest single sampleEntry point | 5 UG/LMCL | None detected |
| Pce | Not detected UG/LHighest single sampleEntry point | 5 UG/LMCL | None detected |
| Styrene | Not detected UG/LHighest single sampleSource water | 100 UG/LMCL | None detected |
| Tce | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Trans Dichloroethylene 12 | Not detected UG/LHighest single sampleEntry point | 10 UG/LMCL | None detected |
| Trichlorobenzene 124 | Not detected UG/LHighest single sampleEntry point | 5 UG/LMCL | None detected |
| Trichloroethane 111 | Not detected UG/LHighest single sampleSource water | 200 UG/LMCL | None detected |
| Trichloroethane 112 | Not detected UG/LHighest single sampleSource water | 5 UG/LMCL | None detected |
| Vinyl Chloride | Not detected UG/LHighest single sampleEntry point | 0.5 UG/LMCL | None detected |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Benzene | Not detected UG/LHighest single sampleEntry point | 1 UG/LMCL | None detected |
| Ethylbenzene | Not detected UG/LHighest single sampleEntry point | 300 UG/LMCL | None detected |
| Toluene | Not detected UG/LHighest single sampleEntry point | 150 UG/LMCL | None detected |
| XylenesA group of industrial solvents found in gasoline and paint. | Not detected UG/LHighest single sampleEntry point | 1750 UG/LMCL | None detected |
People also ask about City of Pittsburg, CA's water
+Is City of Pittsburg, CA tap water safe to drink in 2023?
The 2023 Consumer Confidence Report for the City of Pittsburg, CA water utility lists 5 contaminants at or above the federal limit: Manganese, Iron, Total Dissolved Solids, Specific Conductance, and Color. 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?
72 contaminants were measured in City of Pittsburg, CA's 2023 Consumer Confidence Report, spanning other, metals, and physical & aggregate. 52 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?
5 contaminants in City of Pittsburg, CA's 2023 report sit at or above the federal limit: Manganese (5.1× the limit); Iron (2.7× the limit); Total Dissolved Solids (1.3× the limit); Specific Conductance (1.3× the limit); Color (1.0× 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 2023 report is Manganese, at 5.1× the federal threshold. It belongs to the metals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from City of Pittsburg, CA's 2023 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 2023 report; a new report will replace it once the utility publishes its next annual update.