PFAS in tap water, Morris County, New Jersey
24 of 34 water systems had PFAS-4 above our 0.5 ng/L benchmark at the latest sample. Highest: Rockaway Boro Water Dept, 26.9 ng/L. 26 had PFOA or PFOS above the 4 ng/L federal MCL in at least one sample.
34 community water systems · 610,548 people served · newest sample November 10, 2025
Water systems in Morris County
| Water system | People served | PFAS-4 at the latest sample | Entry points | Latest sample |
|---|---|---|---|---|
| NJ American Water - Short Hills | 217,230 | 14.7 ng/L above the 2029 federal MCL | 12 | August 12, 2024 |
| Southeast Morris County MUA | 62,349 | 14.9 ng/L above the 2029 federal MCL | 9 | November 2, 2023 |
| Parsippany-Troy Hills Water Department | 50,400 | 18.3 ng/L above the 2029 federal MCL | 14 | October 15, 2024 |
| Dover Water Commission | 27,806 | 25.7 ng/L above the 2029 federal MCL | 2 | September 12, 2024 |
| Montville TWP MUA | 22,000 | 5.8 ng/L above the 2029 federal MCL | 4 | July 12, 2024 |
| Denville TWP Water Dept | 15,881 | 19.3 ng/L above the 2029 federal MCL | 5 | April 14, 2025 |
| Madison Water Dept | 15,820 | 9.6 ng/L above the 2029 federal MCL | 4 | May 29, 2025 |
| Randolph TWP Public Works Dept | 14,820 | below the 3 to 4 ng/L reporting limit | 5 | July 18, 2025 |
| Pequannock TWP Water Department | 14,010 | below the 3 to 4 ng/L reporting limit | 1 | October 29, 2024 |
| Rockaway TWP Water Dept | 14,000 | 25.3 ng/L above the 2029 federal MCL | 3 | September 8, 2025 |
| NJ American Water - Roxbury | 11,793 | below the 3 to 4 ng/L reporting limit | 4 | April 23, 2025 |
| East Hanover TWP Water Dept | 11,393 | 20.9 ng/L above the 2029 federal MCL | 3 | January 2, 2024 |
| Lincoln Park Water Dept | 11,000 | 4.1 ng/L above the 2029 federal MCL | 1 | April 10, 2024 |
| Boonton Water Dept | 9,532 | 15.6 ng/L above the 2029 federal MCL | 2 | February 13, 2024 |
| Chatham Water Dept | 8,962 | below the 3 to 4 ng/L reporting limit | 1 | September 11, 2023 |
| Florham Park Water Dept | 8,846 | 12.5 ng/L above the 2029 federal MCL | 4 | August 12, 2024 |
| Jefferson TWP W U Lk Hop | 8,500 | 18.1 ng/L above the 2029 federal MCL | 2 | August 12, 2025 |
| Mount Olive TWP W D Main | 7,887 | 10.7 ng/L above the 2029 federal MCL | 3 | November 6, 2023 |
| Butler Water Dept | 7,630 | 8.5 ng/L above the 2029 federal MCL | 1 | November 13, 2023 |
| Rockaway Boro Water Dept | 7,066 | 26.9 ng/L above the 2029 federal MCL | 1 | July 29, 2024 |
| NJ American Water - Itc | 6,463 | 6.6 ng/L above the 2029 federal MCL | 3 | September 18, 2024 |
| Wharton Water Dept | 6,342 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 3 | November 13, 2024 |
| Awo&m - Picatinny Arsenal | 6,011 | below the 3 to 4 ng/L reporting limit | 1 | July 22, 2024 |
| Roxbury TWP W Dept-Shore | 5,153 | 13.3 ng/L above the 2029 federal MCL | 2 | July 22, 2024 |
| Mt Olive Villages Water | 5,000 | 11.1 ng/L above the 2029 federal MCL | 3 | November 6, 2023 |
| Washington TWP MUA-Schoo | 4,986 | 15.7 ng/L above the 2029 federal MCL | 8 | December 11, 2023 |
| Jefferson TWP W U Milton Sys | 4,500 | 6.1 ng/L above the 2029 federal MCL | 3 | November 10, 2025 |
| Roxbury TWP W Dept-Sky V | 4,478 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 2 | September 11, 2023 |
| Mine Hill TWP Water Dept | 4,300 | below the 3 to 4 ng/L reporting limit | 1 | October 14, 2025 |
| Mountain Lakes Water DEP | 4,012 | 13.3 ng/L above the 2029 federal MCL | 4 | August 26, 2025 |
| Mt Olive Village Green Water System | 3,600 | below the 3 to 4 ng/L reporting limit | 1 | December 18, 2024 |
| Washington TWP MUA-Hager | 3,458 | 9.6 ng/L above the 2029 federal MCL | 3 | August 12, 2025 |
| Netcong Water Dept | 3,342 | 19 ng/L above the 2029 federal MCL | 3 | October 11, 2023 |
| Mount Arlington Boro DPW Main | 1,978 | below the 3 to 4 ng/L reporting limit | 1 | July 14, 2025 |
| West Main Associates non-transient non-community water system | 574 | monitored under UCMR 5, no page | ||
| Sandshore Industrial Condo Association non-transient non-community water system | 75 | monitored under UCMR 5, no page | ||
2 systems without a page are not a community water system (schools, workplaces, campgrounds). Nobody's home tap water.
Not sure which one is yours? The systems report their own service areas to EPA. Check your water bill or your utility's Consumer Confidence Report.
Cities and towns
- Bedminster
- Belvidere
- Berkeley Heights town/township
- Bernards town/township
- Bernardsville
- Bloomingdale
- Boonton
- Butler
- Chatham
- Chester
- Denville town/township
- Dover
- East Hanover town/township
- Far Hills
- Florham Park
- Franklin
- Frenchtown
- Hanover town/township
- Harding town/township
- Hillside town/township
- Irvington town/township
- Jefferson town/township
- Kinnelon
- Lincoln Park
- Little Falls town/township
- Livingston town/township
- Madison
- Maplewood town/township
- Mendham
- Millburn town/township
- Mine Hill town/township
- Montville town/township
- Morris town/township
- Morris Plains
- Morristown
- Mount Arlington
- Mount Olive town/township
- Mountain Lakes
- Netcong
- New Providence
- North Caldwell
- Oxford
- Parsippany-Troy Hills town/township
- Pequannock town/township
- Randolph town/township
- Rockaway
- Roxbury town/township
- South Orange town/township
- Springfield
- Summit
- Tewksbury town/township
- Union
- Warren town/township
- Washington
- West Milford town/township
- Wharton
ZIP codes in Morris County
Census ZIP code tabulation areas that overlap the county. A ZIP served by one system opens that system's page; a ZIP shared by several systems lists them.
How to read these numbers
We compare PFAS-4 (PFOA + PFOS + PFNA + PFHxS) with this site's 0.5 ng/L benchmark, the same line as on the European pages. UCMR 5 reporting limits are 3 to 4 ng/L. So any quantified PFAS-4 compound is above the benchmark, and a clean result reads "below the 3 to 4 ng/L reporting limit", never zero. The US legal limit is the 4 ng/L federal MCL for PFOA and PFOS, which systems must meet from April 26, 2029 ("above the 2029 federal MCL").
EPA: "UCMR 5 results do not indicate compliance or noncompliance with the PFAS drinking water standards". Samples are taken where water enters the distribution system, not at your tap. A system may have changed sources or added treatment since. Source: U.S. Environmental Protection Agency (EPA), Office of Water, PFAS National Primary Drinking Water Regulation (NPDWR). Regulation details retrieved September 19, 2026. Every system page tracks the 2029 compliance date and the proposed rescission of the PFHxS, PFNA, HFPO-DA and Hazard Index limits.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.