Clark Shores Water Corporation
Published drinking-water records and contacts for Clark Shores Water Corporation. System MA4146006. Review sources and dates; not a real-time water assessment.
- System ID
- MA4146006
- State or territory
- MA
- Published population served
- 350
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 8 — 2018-01-01 – 2025-12-31
- Massachusetts EEA PFAS monitoring results: 216 — 2021-06-25 – 2026-04-06
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
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 mg/L | 2025-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2024-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0.0014 mg/L | 2023-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2022-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0.001 mg/L | 2021-01-01 – 2021-12-31 | 2026Q3 |
| Lead (PB90) | 0.006 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2020-01-01 – 2020-06-30 | 2026Q3 |
| Lead (PB90) | 0.001 mg/L | 2019-07-01 – 2019-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| 9-CHLOROHEXADECAFLUORO-3-OXANONE-1-SULFONIC ACID-9CL-PF3ONS | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUORODODECANOIC ACID - PFDOA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTETRADECANOIC ACID - PFTA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| N-ETHYL PERFLUOROOCTANESULFONAMIDOACETIC ACID - NETFOSAA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUOROUNDECANOIC ACID - PFUNA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUORONONANOIC ACID-PFNA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| 11-CHLOROEICOSAFLUORO-3-OXAUNDECANE-1-SULFONIC ACID-11CL-PF3OUDS | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUOROTRIDECANOIC ACID - PFTRDA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUORODECANOIC ACID - PFDA | Below a limit; numeric threshold unavailable ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUOROBUTANESULFONIC ACID-PFBS | 1.69 J ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEPTANOIC ACID-PFHPA | 1.08 J ng/L | 2026-04-06 | WELL # 2,3,4,5 / Massachusetts EEA PFAS monitoring results |
| PERFLUOROHEXANOIC ACID - PFHXA | 1.65 J ng/L | 2026-04-06 | WELL # 2,3,4,5 / 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
19 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 |
|---|---|---|---|---|
| Nitrate Rule / Monitoring, Regular | 2015-10-01 – 2015-12-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Maximum Contaminant Level Violation, Average | 2005-04-01 – 2005-06-30 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 2000-10-01 – 2000-12-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 2000-05-01 – 2000-05-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1998-10-01 – 1998-12-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1998-04-01 – 1998-06-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1997-10-01 – 1997-12-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1997-07-01 – 1997-09-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1997-07-01 – 1997-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1997-04-01 – 1997-06-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1996-07-01 – 1996-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1996-04-01 – 1996-06-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1995-10-01 – 1995-12-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1995-07-01 – 1995-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1995-04-01 – 1995-06-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1994-10-01 – 1994-12-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1994-07-01 – 1994-09-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1994-07-01 – 1994-09-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1993-07-01 – 1993-09-30 | 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)
Clark Shores Water Corporation: 7744066025
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.