No open health-based violations on EPA record in the last 10 years.
Serves about 58,000 people (18,466 connections) with groundwater from its own wells.
From EPA's record for NY2902831. PurityMap is independent of Jericho WD.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From July 2023 | Lead and Copper Rule | – | TT | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from April 2023 to November 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorohexanoic acid (PFHxA) | 18 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | 9.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorobutanoic acid (PFBA) | 67 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoroheptanoic acid (PFHpA) | 4.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoropentanoic acid (PFPeA) | 37 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 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 | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 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 | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 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 | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 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 | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 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 | 2023-04-25 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-25 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-25 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| 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 | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-25 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-25 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-28 to 2025-11-12 | UCMR5 Analytical Results: JERICHO WD (NY2902831) |
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 →Jericho WD's phone number on EPA record is 516-921-8280. Its mailing address is JERICHO WATER DISTRICT, 125 CONVENT ROAD, SYOSSET, NY 11791.
According to EPA's record, Jericho WD uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Jericho WD in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Jericho WD's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Jericho WD. Its phone number on EPA record is 516-921-8280. Its mailing address on EPA record is JERICHO WATER DISTRICT, 125 CONVENT ROAD, SYOSSET, NY 11791. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.