Knightville Dam Water System
Published drinking-water records and contacts for Knightville Dam Water System. System MA1143011. Review sources and dates; not a real-time water assessment.
- System ID
- MA1143011
- State or territory
- MA
- Published population served
- 100
- System type (source code)
- TNCWS
Published records and dates
- Massachusetts EEA PFAS monitoring results: 35 — 2021-08-10 – 2021-08-10
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 | Sample date | Location / source |
|---|---|---|---|
| 11-CHLOROEICOSAFLUORO-3-OXAUNDECANE-1-SULFONIC ACID-11CL-PF3OUDS | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| 9-CHLOROHEXADECAFLUORO-3-OXANONE-1-SULFONIC ACID-9CL-PF3ONS | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| N-METHYL PERFLUOROOCTANESULFONAMIDOACETIC ACID - NMEFOSAA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROBUTANESULFONIC ACID-PFBS | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROOCTANOIC ACID-PFOA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROUNDECANOIC ACID - PFUNA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| 9-CHLOROHEXADECAFLUORO-3-OXANONE-1-SULFONIC ACID-9CL-PF3ONS | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROUNDECANOIC ACID - PFUNA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTRIDECANOIC ACID - PFTRDA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUORONONANOIC ACID-PFNA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTETRADECANOIC ACID - PFTA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEXANOIC ACID - PFHXA | Below a limit; numeric threshold unavailable ng/L | 2021-08-10 | POINT OF ENTRY / 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
6 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 |
|---|---|---|---|---|
| Revised Total Coliform Rule / Treatment Technique Startup Procedures (RTCR) | 2026-05-11 – — | Resolved | Yes | 2026Q3 |
| Ground Water Rule / Monitoring, Source Water (GWR) | 2010-08-01 – — | Addressed | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2006-07-01 – 2006-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Minor (TCR) | 2000-08-01 – 2000-08-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2000-04-01 – 2000-06-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1998-04-01 – 1998-07-31 | 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)
Knightville Dam Water System: 4136673656
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.