ZIP 16127: your water comes from Grove City Boro Water Dept
Grove City Boro Water Dept is the only community water system that reports serving ZIP 16127 (Butler County, Lawrence County and 2 more, Pennsylvania) under EPA's UCMR 5 (reported by the system to EPA). PFAS-4 at the latest sample (2025): below the 3 to 4 ng/L reporting limit. Systems report their own ZIP lists to EPA; if your water bill names another utility, that utility's page carries its own results.
Where this ZIP is
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.