What was found in ZIP 01257
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 130 µg/L 1.3% of the EPA limit 10000 µg/L Main supplier: AQUARION WATER COMPANY · 987 people · 2019 | 2/2 | SYR4 |
| TTHM | 2.9365 µg/L 3.7% of the EPA limit 80 µg/L Highest in the ZIP: BERKSHIRE SCHOOL · 425 people · 2019 | 1/2 | SYR4 |
| Chloroform | 0.8400 µg/L No EPA limit set Highest in the ZIP: BERKSHIRE SCHOOL · 425 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 0.7800 µg/L No EPA limit set Highest in the ZIP: BERKSHIRE SCHOOL · 425 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 0.6600 µg/L No EPA limit set Highest in the ZIP: BERKSHIRE SCHOOL · 425 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 0.5000 µg/L No EPA limit set Highest in the ZIP: BERKSHIRE SCHOOL · 425 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 0.5000 µg/L 0.8% of the EPA limit 60 µg/L Highest in the ZIP: BERKSHIRE SCHOOL · 425 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: AQUARION WATER COMPANY · 987 people · 2024 | 2/2 | 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.
Water suppliers serving ZIP 01257
| Supplier | State | Population served |
|---|---|---|
| AQUARION WATER COMPANY | CT | 987 |
| BERKSHIRE SCHOOL | MA | 425 |
Frequently asked questions about ZIP 01257 tap water
Is the tap water in ZIP 01257 safe to drink?
EPA testing detected 8 contaminants across the water suppliers serving ZIP 01257. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 01257?
2 public water suppliers report EPA drinking-water monitoring for ZIP 01257. Each is listed above with its population served.
What contaminants are in ZIP 01257's water?
EPA monitoring detected Nitrate, TTHM, Chloroform, Dibromochloromethane, Bromodichloromethane, and others across this ZIP's suppliers. The full list with levels and sources is above.