PFAS in tap water, Centre County, Pennsylvania
1 of 8 water systems had PFAS-4 above our 0.5 ng/L benchmark at the latest sample. Highest: Spring TWP Water Authority, 4.2 ng/L. 1 had PFOA or PFOS above the 4 ng/L federal MCL in at least one sample.
8 community water systems · 153,415 people served · newest sample December 18, 2024
Water systems in Centre County
| Water system | People served | PFAS-4 at the latest sample | Entry points | Latest sample |
|---|---|---|---|---|
| State College Boro Water Auth | 72,000 | below the 3 to 4 ng/L reporting limit | 5 | October 11, 2023 |
| Penn State Univ | 37,000 | below the 3 to 4 ng/L reporting limit | 1 | October 28, 2024 |
| PAW Philipsburg | 20,865 | below the 3 to 4 ng/L reporting limit | 2 | November 12, 2024 |
| Bellefonte Borough Water Auth | 9,500 | below the 3 to 4 ng/L reporting limit | 2 | December 18, 2024 |
| College TWP Water Authority | 6,000 | below the 3 to 4 ng/L reporting limit | 2 | July 19, 2023 |
| Spring TWP Water Authority | 3,300 | 4.2 ng/L | 2 | November 19, 2024 |
| State Corr Inst Benner TWP | 2,850 | below the 3 to 4 ng/L reporting limit above the 2029 federal MCL in an earlier sample | 3 | October 16, 2024 |
| Centre Hall Boro Water Dept | 1,900 | below the 3 to 4 ng/L reporting limit | 1 | September 20, 2023 |
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 Centre 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.