No health-based violations on EPA record since 2016.
Serves about 3,348 people (1,573 connections) with surface water from its own intake, and buys water from Town of North Kingstown.
From EPA's record for RI1858419. PurityMap is independent of Jamestown 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 February 2023 to October 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanoic acid (PFBA) | 12 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| 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 | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-27 to 2023-10-17 | UCMR5 Analytical Results: JAMESTOWN WATER DEPARTMENT (RI1858419) |
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 →Jamestown Water Department's phone number on EPA record is 401-423-7225. Its mailing address is 93 NARRAGANSETT AVENUE, JAMESTOWN, RI 02835.
According to EPA's record, Jamestown Water Department uses surface water from its own intake, and buys water from Town of North Kingstown.
No health-based violations on EPA record since 2016. EPA also lists 11 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Jamestown Water Department's latest lead and copper round, which ended in December 2025, was 1.1 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Jamestown Water Department. Its phone number on EPA record is 401-423-7225. Its mailing address on EPA record is 93 NARRAGANSETT AVENUE, JAMESTOWN, RI 02835. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.