No health-based violations on EPA record since 2016.
Serves about 6,600 people (2,770 connections) with surface water from its own intake.
From EPA's record for NY5801258. PurityMap is independent of Williamson Town WD.
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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 2025 to September 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| 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 | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-11 to 2025-09-15 | UCMR5 Analytical Results: WILLIAMSON TOWN WD (NY5801258) |
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 →Williamson Town WD's phone number on EPA record is 315-589-2038. Its mailing address is WILLIAMSON WATER UTILITIES, 6380 ROUTE 21 SUITE 2, WILLIAMSON, NY 14589.
According to EPA's record, Williamson Town WD uses surface water from its own intake.
No health-based violations on EPA record since 2016. EPA also lists 8 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Williamson Town WD's latest lead and copper round, which ended in December 2023, was 1.2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Williamson Town WD. Its phone number on EPA record is 315-589-2038. Its mailing address on EPA record is WILLIAMSON WATER UTILITIES, 6380 ROUTE 21 SUITE 2, WILLIAMSON, NY 14589. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.