Mattapoisett River Valley W.D.
Published drinking-water records and contacts for Mattapoisett River Valley W.D.. System MA4173001. Review sources and dates; not a real-time water assessment.
- System ID
- MA4173001
- State or territory
- MA
- Published population served
- 29600
- System type (source code)
- CWS
Published records and dates
- PFAS / lithium (EPA UCMR 5): 90 — 2024-03-29 – 2024-09-23
- Massachusetts EEA PFAS monitoring results: 93 — 2021-04-08 – 2024-11-05
Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.
Published testing results
Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.
“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example
| Substance | Published result | Reporting limit | Sample date | Sampling location |
|---|---|---|---|---|
| 11Cl-PF3OUdS | < 0.005 µg/L | 0.005 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| 4:2 FTS | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| 6:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| 8:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| 9Cl-PF3ONS | < 0.002 µg/L | 0.002 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| ADONA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| HFPO-DA | < 0.005 µg/L | 0.005 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| NEtFOSAA | < 0.005 µg/L | 0.005 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| NFDHA | < 0.02 µg/L | 0.02 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| NMeFOSAA | < 0.006 µg/L | 0.006 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFBA | < 0.005 µg/L | 0.005 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFBS | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFDA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFDoA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFEESA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFHpA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFHpS | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFHxA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFHxS | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFMBA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFMPA | < 0.004 µg/L | 0.004 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFNA | < 0.004 µg/L | 0.004 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFOA | < 0.004 µg/L | 0.004 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFOS | < 0.004 µg/L | 0.004 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFPeA | < 0.003 µg/L | 0.003 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFPeS | < 0.004 µg/L | 0.004 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFTA | < 0.008 µg/L | 0.008 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFTrDA | < 0.007 µg/L | 0.007 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| PFUnA | < 0.002 µg/L | 0.002 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
| lithium | < 9 µg/L | 9 µg/L | 2024-09-23 | Water Treatment Facility / 10000 |
Download all EPA UCMR 5 records (CSV)
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| PERFLUOROOCTANOIC ACID-PFOA | 1.98 J ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROOCTANESULFONIC ACID-PFOS | 1.31 J ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUORODODECANOIC ACID - PFDOA | Below a limit; numeric threshold unavailable ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEXANESULFONIC ACID-PFHXS | 0.86 J ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| N-ETHYL PERFLUOROOCTANESULFONAMIDOACETIC ACID - NETFOSAA | Below a limit; numeric threshold unavailable ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUORODECANOIC ACID - PFDA | Below a limit; numeric threshold unavailable ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEXANOIC ACID - PFHXA | 2.03 ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUORONONANOIC ACID-PFNA | Below a limit; numeric threshold unavailable ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROUNDECANOIC ACID - PFUNA | Below a limit; numeric threshold unavailable ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEPTANOIC ACID-PFHPA | 0.776 J ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTRIDECANOIC ACID - PFTRDA | Below a limit; numeric threshold unavailable ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROBUTANESULFONIC ACID-PFBS | 1.32 J ng/L | 2024-11-05 | WATER TREATMENT FACILITY / Massachusetts EEA PFAS monitoring results |
State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.
Download state records with source notes (CSV)
Published compliance history
0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
- Massachusetts EEA PFAS monitoring results — last successful check: 2026-10-12
Administrative contact (EPA filing)
Mattapoisett River Valley W.D.: 5087584161
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.