No health-based violations on EPA record since 2016.
Serves about 3,468 people (2,161 connections) with groundwater from its own wells.
From EPA's record for WA5326000. PurityMap is independent of Forks Municipal Water Dept.
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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 2025 to August 2025.
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: FORKS MUNICIPAL WATER DEPT (WA5326000) |
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 →According to EPA's record, Forks Municipal Water Dept uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Forks Municipal Water Dept's latest lead and copper round, which ended in December 2024, was 2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Forks Municipal Water Dept. Its mailing address on EPA record is 500 E DIVISION ST, FORKS, WA 98331. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.