What was found in ZIP 01450
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 | 990 µg/L 9.9% of the EPA limit 10000 µg/L Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 3/4 | SYR4 |
| Copper | 110 µg/L 8.5% of the EPA limit 1300 µg/L Highest in the ZIP: WEST GROTON WATER SUPPLY DISTRICT · 1,853 people · 2019 | 2/4 | SYR4 |
| TTHM | 24.805 µg/L 31% of the EPA limit 80 µg/L Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 2/4 | SYR4 |
| Chloroform | 18.7 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 1/4 | SYR4 |
| Barium | 10.4 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2018 | 3/4 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2018
Highest in the ZIP: 6 µg/L — STILL MEADOW VILLAGE CONDOMINIUMS · 50 people · 2018 | 3/4 | SYR4 |
| Bromodichloromethane | 5.2735 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.808 µg/L 8% of the EPA limit 60 µg/L Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 2/4 | SYR4 |
| Dibromochloromethane | 4.368 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 2/4 | SYR4 |
| Trichloroacetic Acid | 3.3195 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 1/4 | SYR4 |
| Dichloroacetic Acid | 1.5705 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 1/4 | SYR4 |
| Monobromoacetic Acid | 1.14 µg/L No EPA limit set Highest in the ZIP: WEST GROTON WATER SUPPLY DISTRICT · 1,853 people · 2019 | 1/4 | SYR4 |
| Bromoform | 1.0265 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2019 | 2/4 | SYR4 |
| Lead | 0.0047 mg/L 31% of the EPA limit 0.0150 mg/L Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2025 | 4/4 | LCR |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: GROTON WATER DEPARTMENT · 5,456 people · 2024 | 1/4 | UCMR-5 |
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 01450
| Supplier | State | Population served |
|---|---|---|
| GROTON WATER DEPARTMENT | MA | 5,456 |
| WEST GROTON WATER SUPPLY DISTRICT | MA | 1,853 |
| THE VILLAGE AT SHEPLEY HILL | MA | 52 |
| STILL MEADOW VILLAGE CONDOMINIUMS | MA | 50 |
Frequently asked questions about ZIP 01450 tap water
Is the tap water in ZIP 01450 safe to drink?
EPA testing detected 15 contaminants across the water suppliers serving ZIP 01450. 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 01450?
4 public water suppliers report EPA drinking-water monitoring for ZIP 01450. Each is listed above with its population served.
What contaminants are in ZIP 01450's water?
EPA monitoring detected Nitrate, Copper, TTHM, Chloroform, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.