PFAS in tap water, Northampton County, Pennsylvania
None of the 8 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.
8 community water systems · 299,197 people served · newest sample November 18, 2025
Water systems in Northampton County
| Water system | People served | PFAS-4 at the latest sample | Entry points | Latest sample |
|---|---|---|---|---|
| City of Bethlehem | 117,259 | below the 3 to 4 ng/L reporting limit | 1 | November 14, 2024 |
| Easton Area Water System | 96,867 | below the 3 to 4 ng/L reporting limit | 1 | November 7, 2023 |
| Northampton Boro Muni Auth | 40,000 | below the 3 to 4 ng/L reporting limit | 1 | July 17, 2025 |
| PAW Blue Mountain Division | 23,763 | below the 3 to 4 ng/L reporting limit | 2 | November 6, 2025 |
| PAW Bangor District | 9,008 | below the 3 to 4 ng/L reporting limit | 2 | November 17, 2025 |
| Hellertown Borough Authority | 5,800 | below the 3 to 4 ng/L reporting limit | 3 | November 18, 2025 |
| Lower Saucon Authority | 5,700 | below the 3 to 4 ng/L reporting limit | 1 | October 15, 2024 |
| Hickory Hills MHC | 800 | below the 3 to 4 ng/L reporting limit | 1 | March 10, 2025 |
| Bangor Area School Complex non-transient non-community water system | 2,700 | monitored under UCMR 5, no page | ||
1 system without a page is 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.
ZIP codes in Northampton 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.