What was found in Bridgeport's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 594000 µg/L 5940% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Highest in the city: BRIDGEPORT PUD · 524 people · 2016 | 1/3 | SYR4 |
| Nitrate | 1600 µg/L 16% of the EPA limit 10000 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019
Highest in the city: 2500 µg/L — USMC - HOUSING COLEVILLE · 424 people · 2019 | 3/3 | SYR4 |
| Fluoride | 100 µg/L 2.5% of the EPA limit 4000 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2014
Highest in the city: 1900 µg/L — USMC - HOUSING COLEVILLE · 424 people · 2019 | 3/3 | SYR4 |
| Lead | 200 µg/L 1333% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2018 | 1/3 | SYR4 |
| Arsenic | 6.87 µg/L 69% of the EPA limit 10 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019
Highest in the city: 76.1 µg/L — USMC - HOUSING COLEVILLE · 424 people · 2019 | 3/3 | SYR4 |
| Barium | 11.95 µg/L 0.6% of the EPA limit 2000 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2014
Highest in the city: 53.05 µg/L — BRIDGEPORT PUD · 524 people · 2019 | 3/3 | SYR4 |
| Antimony, Total | 37.55 µg/L 626% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2018 | 1/3 | SYR4 |
| Copper | 26 µg/L 2% of the EPA limit 1300 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2014 | 1/3 | SYR4 |
| Combined Uranium | 17.582 µg/L 59% of the EPA limit 30 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2017 | 1/3 | SYR4 |
| Dichloromethane | 16 µg/L 320% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2014 | 1/3 | SYR4 |
| TTHM | 6.761 µg/L 8.5% of the EPA limit 80 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019
Highest in the city: 9.818 µg/L — USMC - HOUSING COLEVILLE · 424 people · 2019 | 3/3 | SYR4 |
| Toluene | 9.6 µg/L 1% of the EPA limit 1000 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2014 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.565 µg/L 5.9% of the EPA limit 60 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019
Highest in the city: 7.49 µg/L — BRIDGEPORT PUD · 524 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 1.575 µg/L No EPA limit set Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019
Highest in the city: 7.49 µg/L — BRIDGEPORT PUD · 524 people · 2019 | 2/3 | SYR4 |
| Chloroform | 5.43 µg/L No EPA limit set Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019 | 2/3 | SYR4 |
| Bromoform | 4.076 µg/L No EPA limit set Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 1.1 µg/L No EPA limit set Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019
Highest in the city: 3.174 µg/L — USMC - HOUSING COLEVILLE · 424 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 2.72 pCi/L No EPA limit set Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2012 | 1/3 | SYR4 |
| Dichloroacetic Acid | 2.13 µg/L No EPA limit set Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019 | 1/3 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: BRIDGEPORT PUD · 524 people · 2019 | 1/3 | SYR4 |
| Bromodichloromethane | 1.945 µg/L No EPA limit set Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 1.5 µg/L No EPA limit set Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 0.6700 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2014 | 1/3 | SYR4 |
| Mercury | 0.2400 µg/L 12% of the EPA limit 2 µg/L Highest in the city: USMC - HOUSING COLEVILLE · 424 people · 2018 | 1/3 | SYR4 |
| Nitrite | 0.0280 µg/L 0% of the EPA limit 1000 µg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2014 | 1/3 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: USMC/MTN WARFARE TRNG CTR - BRIDGEPORT · 1,200 people · 2027
Highest in the city: 0.0019 mg/L — BRIDGEPORT PUD · 524 people · 2025 | 3/3 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Bridgeport
| Supplier | Population served |
|---|---|
| USMC/MTN WARFARE TRNG CTR - BRIDGEPORT | 1,200 |
| BRIDGEPORT PUD | 524 |
| USMC - HOUSING COLEVILLE | 424 |
Frequently asked questions about Bridgeport tap water
Is Bridgeport tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Bridgeport. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Bridgeport?
3 public water suppliers report drinking-water monitoring for Bridgeport, California to the EPA. Each is listed above with its population served.
What contaminants are in Bridgeport's water?
The contaminants EPA monitoring detected in Bridgeport include Nitrate-Nitrite, Nitrate, Fluoride, Lead, Arsenic. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.