No health-based violations on EPA record since 2016.
Serves about 6,082 people (2,846 connections) with groundwater from its own wells.
From EPA's record for MA4296000. PurityMap is independent of Tisbury Water Works.
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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 March 2024 to September 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| 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 | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-12 to 2024-09-18 | UCMR5 Analytical Results: TISBURY WATER WORKS (MA4296000) |
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 →Tisbury Water Works's phone number on EPA record is 5086933100. Its mailing address is P.O. BOX 84, 400 WEST SPRING STREET, TISBURY, MA 02568.
According to EPA's record, Tisbury Water Works uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 16 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Tisbury Water Works's latest lead and copper round, which ended in December 2024, was 7.2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Tisbury Water Works. Its phone number on EPA record is 5086933100. Its mailing address on EPA record is P.O. BOX 84, 400 WEST SPRING STREET, TISBURY, MA 02568. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.