What was found in ZIP 02777
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 | 2451.5 µg/L 25% of the EPA limit 10000 µg/L Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019 | 2/2 | SYR4 |
| Fluoride | 1040 µg/L 26% of the EPA limit 4000 µg/L Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 1300 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| TTHM | 97.115 µg/L 121% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 136.25 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| Copper | 95 µg/L 7.3% of the EPA limit 1300 µg/L Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2019 | 1/2 | SYR4 |
| Bromoform | 0.5600 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 80.3 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| Chloroform | 78.56 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 55.205 µg/L 92% of the EPA limit 60 µg/L Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 35.39 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.029 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 33.045 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 19.3 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 21.67 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 19.45 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 13.34 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2019 | 1/2 | SYR4 |
| Chromium | 12 µg/L 12% of the EPA limit 100 µg/L Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 3.088 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 6.395 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.09 µg/L No EPA limit set Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2019
Highest in the ZIP: 3.06 µg/L — SWANSEA WATER DISTRICT · 17,375 people · 2019 | 2/2 | SYR4 |
| Pfba | 0.0109 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0100 mg/L 67% of the EPA limit 0.0150 mg/L Main supplier: SOMERSET WATER DEPARTMENT · 18,303 people · 2025 | 2/2 | LCR |
| PFHXS | 0.0077 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2024 | 1/2 | UCMR-5 |
| PFOA | 0.0051 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0049 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0040 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2024 | 1/2 | UCMR-5 |
| PFBS | 0.0035 µg/L No EPA limit set Highest in the ZIP: SWANSEA WATER DISTRICT · 17,375 people · 2024 | 1/2 | 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 02777
| Supplier | State | Population served |
|---|---|---|
| SOMERSET WATER DEPARTMENT | MA | 18,303 |
| SWANSEA WATER DISTRICT | MA | 17,375 |
Frequently asked questions about ZIP 02777 tap water
Is the tap water in ZIP 02777 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 02777. 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 02777?
2 public water suppliers report EPA drinking-water monitoring for ZIP 02777. Each is listed above with its population served.
What contaminants are in ZIP 02777's water?
EPA monitoring detected Nitrate, Fluoride, TTHM, Copper, Bromoform, and others across this ZIP's suppliers. The full list with levels and sources is above.