What was found in Plainfield'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 | 3185 µg/L 32% of the EPA limit 10000 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 5481.04 µg/L — JUMBO APARTMENTS · 35 people · 2019 | 8/8 | SYR4 |
| Nitrate | 3198.5 µg/L 32% of the EPA limit 10000 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 5142.1 µg/L — JUMBO APARTMENTS · 35 people · 2019 | 8/8 | SYR4 |
| Copper | 431 µg/L 33% of the EPA limit 1300 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2017
Highest in the city: 767.5 µg/L — MOOSUP MANOR · 27 people · 2019 | 8/8 | SYR4 |
| Fluoride | 130 µg/L 3.3% of the EPA limit 4000 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 340 µg/L — MOOSUP GARDEN APARTMENTS · 270 people · 2018 | 5/8 | SYR4 |
| Lead | 4.745 µg/L 32% of the EPA limit 15 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2017
Highest in the city: 89.86 µg/L — MOOSUP GARDEN APARTMENTS · 270 people · 2019 | 8/8 | SYR4 |
| Barium | 31.8 µg/L 1.6% of the EPA limit 2000 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 35.6 µg/L — WESTVIEW TERRACE MOBILE HOME PARK · 60 people · 2018 | 7/8 | SYR4 |
| Chromium | 34 µg/L 34% of the EPA limit 100 µg/L Highest in the city: MOOSUP GARDEN APARTMENTS · 270 people · 2018 | 1/8 | SYR4 |
| TTHM | 16.6975 µg/L 21% of the EPA limit 80 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019 | 2/8 | SYR4 |
| Nitrite | 11 µg/L 1.1% of the EPA limit 1000 µg/L Highest in the city: MOOSUP POND TERRACE, LLC · 46 people · 2019 | 1/8 | SYR4 |
| Chloroform | 7.56 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019 | 2/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.7 µg/L 9.5% of the EPA limit 60 µg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019 | 2/8 | SYR4 |
| Gross Beta Particle Activity | 5.18 pCi/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2018 | 1/8 | SYR4 |
| Bromodichloromethane | 4.695 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019 | 2/8 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3 pCi/L 20% of the EPA limit 15 pCi/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 4.55 pCi/L — CTWC - PLAINFIELD SYSTEM · 1,713 people · 2018 | 3/8 | SYR4 |
| Arsenic | 4 µg/L 40% of the EPA limit 10 µg/L Highest in the city: MOOSUP GARDEN APARTMENTS · 270 people · 2018 | 2/8 | SYR4 |
| Dibromochloromethane | 3.395 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 3.73 µg/L — CTWC - PLAINFIELD SYSTEM · 1,713 people · 2019 | 2/8 | SYR4 |
| Dichloroacetic Acid | 3.3 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019 | 2/8 | SYR4 |
| Combined Radium (-226 And -228) | 2.59 pCi/L 52% of the EPA limit 5 pCi/L Highest in the city: MOOSUP POND TERRACE, LLC · 46 people · 2018 | 2/8 | SYR4 |
| Bromoform | 0.9600 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 2.13 µg/L — CTWC - PLAINFIELD SYSTEM · 1,713 people · 2019 | 2/8 | SYR4 |
| Dibromoacetic Acid | 1.47 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019
Highest in the city: 1.675 µg/L — CTWC - PLAINFIELD SYSTEM · 1,713 people · 2019 | 2/8 | SYR4 |
| Trichloroacetic Acid | 1.29 µg/L No EPA limit set Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0023 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: CTWC - GALLUP SYSTEM · 2,538 people · 2026 | 8/8 | 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 Plainfield
| Supplier | Population served |
|---|---|
| CTWC - GALLUP SYSTEM | 2,538 |
| CTWC - PLAINFIELD SYSTEM | 1,713 |
| MOOSUP GARDEN APARTMENTS | 270 |
| WESTVIEW TERRACE MOBILE HOME PARK | 60 |
| MOOSUP POND TERRACE, LLC | 46 |
| JUMBO APARTMENTS | 35 |
| ARNIO DRIVE LLC | 33 |
| MOOSUP MANOR | 27 |
Frequently asked questions about Plainfield tap water
Is Plainfield tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Plainfield. 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 Plainfield?
8 public water suppliers report drinking-water monitoring for Plainfield, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Plainfield's water?
The contaminants EPA monitoring detected in Plainfield include Nitrate-Nitrite, Nitrate, Copper, Fluoride, Lead. 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.