No open health-based violations on EPA record in the last 10 years.
Serves about 4,500 people (1,568 connections) with groundwater from its own wells.
From EPA's record for NJ1414003. PurityMap is independent of Jefferson Twp W U Milton Sys.
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2 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2024 | Lead and Copper Rule | – | TT | Resolved |
| From July 2023 | Lead and Copper Rule | – | TT | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from May 2025 to November 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 11.5 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Lithium | 17.1 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorooctanesulfonic acid (PFOS) | 6.8 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorobutanesulfonic acid (PFBS) | 5.8 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorohexanoic acid (PFHxA) | 10 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorobutanoic acid (PFBA) | 6.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoroheptanoic acid (PFHpA) | 3.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoropentanoic acid (PFPeA) | 16.7 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| 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 | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| 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 | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| 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 | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| 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 | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| 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 | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-12 to 2025-11-10 | UCMR5 Analytical Results: JEFFERSON TWP W U MILTON SYS (NJ1414003) |
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 →Jefferson Twp W U Milton Sys's phone number on EPA record is 973-208-6102. Its mailing address is 1033 WELDON RD, LAKE HOPATCONG, NJ 07849.
According to EPA's record, Jefferson Twp W U Milton Sys uses groundwater from its own wells.
EPA's record shows 2 health-based violations for Jefferson Twp W U Milton Sys in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 43 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Jefferson Twp W U Milton Sys's latest lead and copper round, which ended in June 2026, was 4.92 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Jefferson Twp W U Milton Sys. Its phone number on EPA record is 973-208-6102. Its mailing address on EPA record is 1033 WELDON RD, LAKE HOPATCONG, NJ 07849. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.