Water report · not indexed
What is in the water at 02777
2 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
SOMERSET WATER DEPARTMENT
PWSID MA4273000 · MA · serves 18,303 people
PFAS and lithium
Sampled, nothing detected. Tested for 30 compounds under UCMR 5 with none found at or above its reporting limit. A reporting limit is the lowest concentration the method can measure, so this means “below that” rather than “zero”.
Health-based violations
9 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- MCL · contaminant code 2950 · began 2021-10-01
- MCL · contaminant code 2950 · began 2018-01-01
- MCL · contaminant code 2950 · began 2019-04-01
- MCL · contaminant code 2950 · began 2019-07-01
- MCL · contaminant code 2950 · began 2019-10-01
- MCL · contaminant code 2950 · began 2020-01-01
- MCL · contaminant code 2950 · began 2020-07-01
- MCL · contaminant code 2950 · began 2020-10-01
Hardness
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
SWANSEA WATER DISTRICT
PWSID MA4292000 · MA · serves 17,375 people
PFAS and lithium
6 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 13 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFBA | 0.011 µg/L | 2 | 7/20/2023 |
| PFHxS | 0.0077 µg/L | 2 | 8/5/2024 |
| PFOA | 0.0051 µg/L | 3 | 7/20/2023 |
| PFPeA | 0.0049 µg/L | 2 | 7/20/2023 |
| PFHxA | 0.004 µg/L | 1 | 7/20/2023 |
| PFBS | 0.0035 µg/L | 3 | 8/5/2024 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
10 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- MCL · contaminant code 2950 · began 2019-07-01
- MCL · contaminant code 2950 · began 2019-10-01
- MCL · contaminant code 2950 · began 2020-01-01
- MCL · contaminant code 2950 · began 2016-10-01
- MCL · contaminant code 2950 · began 2017-01-01
- TT · contaminant code 0200 · began 2017-05-01
- MCL · contaminant code 2950 · began 2018-07-01
- MCL · contaminant code 2950 · began 2018-10-01
Hardness
Too few readings to state a hardness. 1 station(s), 1 result(s). Below two stations and five results this page will not state a number: a median of two readings from one creek is not your water.
What this report cannot tell you
Every figure describes water at a sampling point: a treatment plant, an entry point to the distribution system, or a monitoring station. None of it describes water arriving at your tap. Plumbing between the two can add lead and copper, and if your home was built before 1986 a test kit tells you something no federal dataset can.
Sources: EPA UCMR 5 occurrence (final release, frozen July 2026) · EPA SDWIS health-based violations · USGS and state monitoring via the Water Quality Portal · EPA Public Water System Service Area Boundaries v3. Compiled 2026-09-01.