No health-based violations on EPA record since 2016.
Serves about 43,000 people (13,743 connections) with groundwater from its own wells.
From EPA's record for NY2902837. PurityMap is independent of Massapequa 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 January 2025 to July 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| 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 | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-27 to 2025-07-15 | UCMR5 Analytical Results: MASSAPEQUA WD (NY2902837) |
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 →Massapequa WD's phone number on EPA record is 516-798-5266. Its mailing address is 84 GRAND AVE, MASSAPEQUA, NY 11758.
According to EPA's record, Massapequa WD uses groundwater from its own wells.
No health-based violations on EPA record since 2016. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Massapequa WD's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for Massapequa WD. Its phone number on EPA record is 516-798-5266. Its mailing address on EPA record is 84 GRAND AVE, MASSAPEQUA, NY 11758. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.