No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting January 2022.
Serves about 752 people (338 connections) with surface water bought from Brunswick Consolidated Water District.
From EPA's record for NY4130338. PurityMap is independent of Poestenkill Wd#1.
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4 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 88.875 µg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 83.275 µg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 86.5 ng/L | 0.080 mg/L | Resolved |
| Jan–Mar 2021 | Total trihalomethanes (TTHM) | 81.175 mg/L | 0.080 mg/L | Archived |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2025 to October 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 | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 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 | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 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 | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 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 | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 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 | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 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 | 2025-03-10 to 2025-10-06 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| 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 | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-03-10 to 2025-08-26 | UCMR5 Analytical Results: POESTENKILL WD#1 (NY4130338) |
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 →Poestenkill Wd#1's phone number on EPA record is 518-283-5100. Its mailing address is PO BOX 210, 38 DAVIS ROAD, POESTENKILL, NY 12140.
According to EPA's record, Poestenkill Wd#1 uses surface water bought from Brunswick Consolidated Water District.
EPA's record shows 4 health-based violations for Poestenkill Wd#1 in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting January 2022. 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 Poestenkill Wd#1's latest lead and copper round, which ended in December 2023, was 2 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Poestenkill Wd#1. Its phone number on EPA record is 518-283-5100. Its mailing address on EPA record is PO BOX 210, 38 DAVIS ROAD, POESTENKILL, NY 12140. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.