Is there PFAS in Sparta Twp Water Utility - Lake Mohawk water?

Yes. EPA's final UCMR 5 results show Sparta Twp Water Utility - Lake Mohawk averaged 8.0 ppt of PFOA at its worst sampling point, 2.0 times the EPA limit of 4 ppt.

Sparta Twp Water Utility - Lake Mohawk is a public water system drawing on groundwater, based in Sparta, New Jersey, serving about 17,625 people. Under EPA's Fifth Unregulated Contaminant Monitoring Rule it was tested for 29 PFAS and lithium 26 times across 13 sampling points between Dec 2023 and Jun 2024.

Every PFAS detected

Not detected: NFDHA, PFPeS, PFHpS, PFDoA, PFTA, PFTrDA, PFNA, PFDA, PFHpA, HFPO-DA, PFUnA, 11Cl-PF3OUdS, PFEESA, ADONA, 6:2 FTS, 4:2 FTS, 8:2 FTS, PFMPA, NEtFOSAA, NMeFOSAA, PFMBA, 9Cl-PF3ONS.

Lithium, tested in the same program: not detected.

What the EPA limits mean here

In April 2024 EPA set enforceable limits of 4 ppt for PFOA and PFOS, 10 ppt each for PFHxS, PFNA and GenX, and a hazard index of 1 for mixtures. Utilities were given until 2029 to comply. In May 2026 EPA proposed keeping only the PFOA and PFOS limits and moving that deadline to 2031. Until that proposal is final, the 2024 limits stand.

Compliance is judged on a running annual average at each entry point, so we show the average at this system's worst sampling point next to its single highest result. UCMR 5 results do not by themselves put a utility in or out of compliance.

What you can do at home

Two routes work for PFAS. For drinking and cooking water only, a reverse osmosis system certified to NSF/ANSI 58 with a PFOA/PFOS reduction claim is the cheapest proven option. To treat every tap and shower, a whole-house carbon system with enough contact time works, but check that the maker has PFAS test data, not just a marketing claim. See the best filters for PFAS and how PFAS removal works.

Other systems in New Jersey

• Medford Twp Dept of Muni 1 PFAS detected
• South Orange Water Department above an EPA limit
• Park Ridge Water Dept above an EPA limit
• South River W Dept above an EPA limit
• Denville Twp Water Dept above an EPA limit
• Maple Shade Water Department above an EPA limit

All 266 tested systems in New Jersey

ZIP codes served

07871

As reported by the utility to EPA. Neighbouring ZIPs are often split between systems; your water bill names yours.

Cite this page

Well & Tap. "PFAS in Sparta Twp Water Utility - Lake Mohawk water: EPA UCMR 5 results." Data: U.S. EPA Fifth Unregulated Contaminant Monitoring Rule, final release August 2026, PWSID NJ1918004. https://wellandtap.com/pfas/new-jersey/sparta-twp-water-utility-lake-mohawk/

About this data

Source: U.S. EPA, UCMR 5 occurrence data, final release August 2026 (PWSID NJ1918004). Population: EPA SDWIS. Averages count results below the reporting level as zero, the same convention EPA uses for running annual averages. Full method.