PFAS in tap water, Macomb County, Michigan
None of the 19 water systems had a PFAS-4 compound above the 3 to 4 ng/L reporting limits at the latest sample. That's below the lab limit, not zero.
19 community water systems · 817,014 people served · newest sample December 15, 2025
Water systems in Macomb County
| Water system | People served | PFAS-4 at the latest sample | Entry points | Latest sample |
|---|---|---|---|---|
| Warren, City of | 134,056 | below the 3 to 4 ng/L reporting limit | 1 | August 5, 2024 |
| Sterling Heights, City of | 127,000 | below the 3 to 4 ng/L reporting limit | 1 | December 12, 2023 |
| Clinton Township | 100,513 | below the 3 to 4 ng/L reporting limit | 1 | November 5, 2024 |
| Macomb Township | 90,000 | below the 3 to 4 ng/L reporting limit | 1 | December 4, 2023 |
| Shelby Township | 72,000 | below the 3 to 4 ng/L reporting limit | 1 | February 5, 2025 |
| St. Clair Shores, City of | 59,715 | below the 3 to 4 ng/L reporting limit | 2 | April 6, 2024 |
| Roseville, City of | 47,299 | below the 3 to 4 ng/L reporting limit | 1 | March 24, 2025 |
| Chesterfield Township | 41,650 | below the 3 to 4 ng/L reporting limit | 1 | February 26, 2025 |
| Eastpointe, City of | 32,442 | below the 3 to 4 ng/L reporting limit | 1 | August 27, 2024 |
| Harrison Township | 24,314 | below the 3 to 4 ng/L reporting limit | 1 | December 15, 2025 |
| Mount Clemens, City of | 16,314 | below the 3 to 4 ng/L reporting limit | 1 | November 19, 2024 |
| Washington Township | 15,828 | below the 3 to 4 ng/L reporting limit | 1 | January 17, 2024 |
| Fraser, City of | 14,297 | below the 3 to 4 ng/L reporting limit | 1 | August 12, 2024 |
| New Baltimore, City of | 12,720 | below the 3 to 4 ng/L reporting limit | 1 | April 17, 2024 |
| Center Line, City of | 8,257 | below the 3 to 4 ng/L reporting limit | 1 | December 4, 2024 |
| Richmond, City of | 6,200 | below the 3 to 4 ng/L reporting limit | 6 | November 13, 2023 |
| New Haven, Village of | 5,600 | below the 3 to 4 ng/L reporting limit | 3 | December 8, 2025 |
| Utica, City of | 5,059 | below the 3 to 4 ng/L reporting limit | 1 | December 8, 2025 |
| Romeo, Village of | 3,750 | below the 3 to 4 ng/L reporting limit | 2 | November 12, 2024 |
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
ZIP codes in Macomb 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.