PFAS in tap water, Monmouth County, New Jersey
11 of 21 water systems had PFAS-4 above our 0.5 ng/L benchmark at the latest sample. Highest: Borough of Springlake Heights, 14.6 ng/L. 15 had PFOA or PFOS above the 4 ng/L federal MCL in at least one sample.
21 community water systems · 643,792 people served · newest sample December 30, 2025
Water systems in Monmouth County
| Water system | People served | PFAS-4 at the latest sample | Entry points | Latest sample |
|---|---|---|---|---|
| NJ American Water - Coastal North | 377,613 | 7.5 ng/L above the 2029 federal MCL | 15 | July 17, 2024 |
| Gordons Corner Water CO | 46,196 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 4 | September 17, 2024 |
| Freehold TWP Water Dept | 29,831 | 5.3 ng/L above the 2029 federal MCL | 4 | May 12, 2025 |
| Marlboro Township Water Utility Division | 29,480 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 3 | September 11, 2025 |
| Wall TWP Water Dept | 26,000 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 6 | July 1, 2024 |
| Belmar Water Dept | 20,000 | 4.3 ng/L above the 2029 federal MCL | 2 | October 7, 2025 |
| Manasquan Water Departme | 14,000 | below the 3 to 4 ng/L reporting limit | 1 | December 30, 2025 |
| Red Bank Water Dept | 12,520 | 5.6 ng/L above the 2029 federal MCL | 3 | November 24, 2025 |
| Spring Lake Water Department | 11,270 | below the 3 to 4 ng/L reporting limit | 3 | May 13, 2025 |
| Freehold Borough Water D | 11,029 | below the 3 to 4 ng/L reporting limit | 1 | June 11, 2025 |
| Keansburg Water & Sewer Dept. | 10,105 | 6.6 ng/L above the 2029 federal MCL | 2 | July 8, 2025 |
| Matawan Borough Water de | 9,084 | 5.4 ng/L above the 2029 federal MCL | 2 | November 19, 2024 |
| Manalapan TWP - Knob Hill | 8,700 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 2 | November 4, 2024 |
| Keyport Water Dept | 7,500 | 7.1 ng/L above the 2029 federal MCL | 2 | May 19, 2025 |
| Aberdeen - Cliffwood/Cliffwood Beach | 6,775 | below the 3 to 4 ng/L reporting limit | 1 | November 10, 2025 |
| Avon By the Sea Water de | 5,000 | 5 ng/L above the 2029 federal MCL | 2 | September 29, 2025 |
| Borough of Springlake Heights | 5,000 | 14.6 ng/L above the 2029 federal MCL | 2 | October 9, 2023 |
| Brielle Water Dept | 4,800 | 4.5 ng/L above the 2029 federal MCL | 2 | April 22, 2024 |
| Atlantic Highlands Water | 4,385 | below the 3 to 4 ng/L reporting limit | 1 | September 16, 2025 |
| Englishtown Water Dept | 2,504 | 5.4 ng/L above the 2029 federal MCL | 2 | December 11, 2024 |
| Allentown Water Dept | 2,000 | below the 3 to 4 ng/L reporting limit | 1 | October 11, 2023 |
| NJ American Water - Shorelands community water system | 36,164 | monitored under UCMR 5, no page | ||
| NJ American Water - Union Beach community water system | 6,000 | monitored under UCMR 5, no page | ||
| Mcdonalds Restaurant #6214 non-transient non-community water system | 1,620 | monitored under UCMR 5, no page | ||
3 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
- Aberdeen town/township
- Allentown
- Asbury Park
- Atl. Highlands Boro-1304
- Avon-by-the-Sea
- Bay Head
- Belmar
- Bradley Beach
- Brick town/township
- Brielle
- Colts Neck town/township
- Eatontown
- Englishtown
- Fair Haven
- Freehold
- Holmdel town/township
- Howell town/township
- Keansburg
- Keyport
- Lakewood
- Little Silver
- Long Branch
- Manalapan town/township
- Manasquan
- Marlboro
- Matawan
- Middletown town/township
- Neptune
- Ocean
- Oceanport
- Old Bridge
- Red Bank
- Rumson
- Shrewsbury
- Spring Lake
- Tinton Falls
- Toms River
- Union Beach
- Wall town/township
- West Long Branch
ZIP codes in Monmouth 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.