Monson Water And Sewer Dept
Published drinking-water records and contacts for Monson Water And Sewer Dept. System MA1191000. Review sources and dates; not a real-time water assessment.
- System ID
- MA1191000
- State or territory
- MA
- Published population served
- 4222
- System type (source code)
- CWS
Published records and dates
- PFAS / lithium (EPA UCMR 5): 180 — 2023-01-10 – 2023-08-30
- Lead and copper monitoring summaries: 14 — 1994-01-01 – 2023-12-31
- Massachusetts EEA PFAS monitoring results: 252 — 2021-10-05 – 2025-04-11
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 | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| 4:2 FTS | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| 6:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| 8:2 FTS | < 0.005 µg/L | 0.005 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| 9Cl-PF3ONS | < 0.002 µg/L | 0.002 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| ADONA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| HFPO-DA | < 0.005 µg/L | 0.005 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| NEtFOSAA | < 0.005 µg/L | 0.005 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| NFDHA | < 0.02 µg/L | 0.02 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| NMeFOSAA | < 0.006 µg/L | 0.006 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| PFBA | < 0.005 µg/L | 0.005 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFBS | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| PFDA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFDoA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFEESA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| PFHpA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFHpS | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFHxA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFHxS | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| PFMBA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| PFMPA | < 0.004 µg/L | 0.004 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFNA | < 0.004 µg/L | 0.004 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| PFOA | < 0.004 µg/L | 0.004 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| PFOS | < 0.004 µg/L | 0.004 µg/L | 2023-08-30 | GP WELL #1 (BETHANY RD) / 10001 |
| PFPeA | < 0.003 µg/L | 0.003 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| PFPeS | < 0.004 µg/L | 0.004 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFTA | < 0.008 µg/L | 0.008 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
| PFTrDA | < 0.007 µg/L | 0.007 µg/L | 2023-07-10 | GP WELL #2 (PALMER RD) / 10002 |
| PFUnA | < 0.002 µg/L | 0.002 µg/L | 2023-07-10 | GP WELL #1 (BETHANY RD) / 10001 |
| lithium | < 9 µg/L | 9 µg/L | 2023-07-10 | BUNYAN ROAD REPLACEMENT WELLS #1 & 2 / 10009 |
Download all EPA UCMR 5 records (CSV)
Lead and copper: 90th-percentile summaries
These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0.0064 mg/L | 2023-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.0064 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.0033 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.0045 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0.0055 mg/L | 2009-01-01 – 2011-12-31 | 2026Q3 |
| Lead (PB90) | 0.0022 mg/L | 2006-01-01 – 2008-12-31 | 2026Q3 |
| Lead (PB90) | 0.0099 mg/L | 2005-01-01 – 2005-12-31 | 2026Q3 |
| Lead (PB90) | 0.003 mg/L | 2002-01-01 – 2002-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| PERFLUOROHEXANESULFONIC ACID-PFHXS | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| 4,8-DIOXA-3H-PERFLUORONONANOIC ACID - ADONA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTRIDECANOIC ACID - PFTRDA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUORODODECANOIC ACID - PFDOA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| N-METHYL PERFLUOROOCTANESULFONAMIDOACETIC ACID - NMEFOSAA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| 9-CHLOROHEXADECAFLUORO-3-OXANONE-1-SULFONIC ACID-9CL-PF3ONS | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEPTANOIC ACID-PFHPA | 0.791 J ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| N-ETHYL PERFLUOROOCTANESULFONAMIDOACETIC ACID - NETFOSAA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTETRADECANOIC ACID - PFTA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUOROOCTANESULFONIC ACID-PFOS | 1.23 J ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUOROOCTANOIC ACID-PFOA | 1.42 J ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / Massachusetts EEA PFAS monitoring results |
| PERFLUORODECANOIC ACID - PFDA | Below a limit; numeric threshold unavailable ng/L | 2025-04-11 | POINT OF ENTRY POST TREATMENT / 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
53 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 2009-09-01 – 2009-09-30 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 2008-12-01 – 2008-12-31 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1999-09-01 – 1999-09-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1996-04-01 – 1996-06-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1996-04-01 – 1996-06-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1995-10-01 – 1995-10-31 | Archived | Yes | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
| Synthetic Organic Chemicals / Monitoring, Regular | 1995-01-01 – 1995-03-31 | Archived | No | 2026Q3 |
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)
Monson Water & Sewer Dept: 4132674130
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.