No health-based violations on EPA record since 2016.
Serves about 5,400 people (1,998 connections) with groundwater from its own wells.
From EPA's record for MA4020000. PurityMap is independent of Barnstable Fire District.
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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 February 2023 to October 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 7.1 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-02-07 to 2023-10-17 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorooctanoic acid (PFOA) | 4.4 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorohexanesulfonic acid (PFHxS) | 3.6 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-02-07 to 2023-10-17 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorobutanesulfonic acid (PFBS) | 18.2 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorohexanoic acid (PFHxA) | 4.1 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoropentanoic acid (PFPeA) | 5.5 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 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 | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 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 | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 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 | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 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 | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 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 | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| 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 | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-07 to 2023-08-07 | UCMR5 Analytical Results: BARNSTABLE FIRE DISTRICT (MA4020000) |
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 →Barnstable Fire District's phone number on EPA record is 5083626498. Its mailing address is P.O. BOX 546, BARNSTABLE, MA 02630.
According to EPA's record, Barnstable Fire District uses groundwater from its own wells.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Barnstable Fire District's latest lead and copper round, which ended in June 2026, was 1.35 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Barnstable Fire District. Its phone number on EPA record is 5083626498. Its mailing address on EPA record is P.O. BOX 546, BARNSTABLE, MA 02630. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.