No health-based violations on EPA record since 2016.
Serves about 9,463 people (2,797 connections) with groundwater from its own wells.
From EPA's record for MA2032000. PurityMap is independent of Blackstone Water Department.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from April 2025 to October 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 5.7 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-07 to 2025-10-07 | UCMR5 Analytical Results: BLACKSTONE WATER DEPARTMENT (MA2032000) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Blackstone Water Department's phone number on EPA record is 5088839331. Its mailing address is 53 ELM ST, BLACKSTONE, MA 01504.
According to EPA's record, Blackstone Water Department uses groundwater from its own wells.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Blackstone Water Department's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Blackstone Water Department. Its phone number on EPA record is 5088839331. Its mailing address on EPA record is 53 ELM ST, BLACKSTONE, MA 01504. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.