What was found in Plainville'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 | 734 µg/L 7.3% of the EPA limit 10000 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 3330 µg/L — CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 4/4 | SYR4 |
| Nitrate-Nitrite | 716.5 µg/L 7.2% of the EPA limit 10000 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 2838 µg/L — CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 4/4 | SYR4 |
| Fluoride | 928 µg/L 23% of the EPA limit 4000 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 1015 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Copper | 42.5 µg/L 3.3% of the EPA limit 1300 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 965.75 µg/L — CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 4/4 | SYR4 |
| Barium | 570 µg/L 28% of the EPA limit 2000 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019 | 4/4 | SYR4 |
| 2,4-D | 100 µg/L 143% of the EPA limit, at the 95th percentile of samples — 70 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019 | 1/4 | SYR4 |
| TTHM | 64.11 µg/L 80% of the EPA limit 80 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 77 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Lead | 22.35 µg/L 149% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 66.75 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Chloroform | 62.845 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 66 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 16 µg/L 27% of the EPA limit 60 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 45.65 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 3.595 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 26 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 13.48 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 20 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Nitrite | 13.2 µg/L 1.3% of the EPA limit 1000 µg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019 | 1/4 | SYR4 |
| Lithium | 11.8 µg/L No EPA limit set Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2023 | 1/4 | UCMR-5 |
| Bromodichloromethane | 9.4 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 9.8675 µg/L — BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 4/4 | SYR4 |
| Tetrachloroethylene | 7.45 µg/L 149% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 2/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.03 pCi/L 47% of the EPA limit 15 pCi/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 3/4 | SYR4 |
| Trichloroethylene | 6.1 µg/L 122% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 2.5 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 5.9 µg/L — AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 1.26 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 5.55 µg/L — CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 3/4 | SYR4 |
| Bromoform | 3.59 µg/L No EPA limit set Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 3/4 | SYR4 |
| cis-1,2-Dichloroethylene | 2.85 µg/L 4.1% of the EPA limit 70 µg/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 0.7700 µg/L No EPA limit set Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2019
Highest in the city: 2.84 µg/L — AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 4/4 | SYR4 |
| 1,2,4-Trichlorobenzene | 2 µg/L 2.9% of the EPA limit 70 µg/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 1/4 | SYR4 |
| Combined Uranium | 1.7 µg/L 5.7% of the EPA limit 30 µg/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 2/4 | SYR4 |
| Monobromoacetic Acid | 1.355 µg/L No EPA limit set Highest in the city: BRISTOL WATER DEPARTMENT · 52,079 people · 2019 | 1/4 | SYR4 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 1/4 | SYR4 |
| 1,1,2-Trichloroethane | 0.6300 µg/L 13% of the EPA limit 5 µg/L Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2019 | 1/4 | SYR4 |
| 1,1,1-Trichloroethane | 0.6200 µg/L 0.3% of the EPA limit 200 µg/L Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2019 | 2/4 | SYR4 |
| Pfba | 0.0070 µg/L No EPA limit set Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2023 | 2/4 | UCMR-5 |
| PFOS | 0.0068 µg/L No EPA limit set Highest in the city: AQUARION-PLAINVILLE REGIONAL · 18,231 people · 2023 | 2/4 | UCMR-5 |
| PFOA | 0.0060 µg/L No EPA limit set Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2023 | 3/4 | UCMR-5 |
| Pfhxa | 0.0040 µg/L No EPA limit set Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2023 | 1/4 | UCMR-5 |
| Pfpea | 0.0040 µg/L No EPA limit set Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2023 | 2/4 | UCMR-5 |
| PFHXS | 0.0030 µg/L No EPA limit set Highest in the city: CTWC - UNIONVILLE SYSTEM · 14,693 people · 2023 | 1/4 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NEW BRITAIN WATER DEPARTMENT · 73,534 people · 2026
Highest in the city: 0.0024 mg/L — CTWC - UNIONVILLE SYSTEM · 14,693 people · 2025 | 4/4 | 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 Plainville
| Supplier | Population served |
|---|---|
| NEW BRITAIN WATER DEPARTMENT | 73,534 |
| BRISTOL WATER DEPARTMENT | 52,079 |
| AQUARION-PLAINVILLE REGIONAL | 18,231 |
| CTWC - UNIONVILLE SYSTEM | 14,693 |
Frequently asked questions about Plainville tap water
Is Plainville tap water safe to drink?
EPA testing detected 37 contaminants in the water serving Plainville. 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 Plainville?
4 public water suppliers report drinking-water monitoring for Plainville, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Plainville's water?
The contaminants EPA monitoring detected in Plainville include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.