Articles
What the federal PFAS rule asks of water systems, and what pays for it. Each article is sourced to EPA documents and dated, so you can see what was true when it was written.
PFAS detected vs. over the limit: what the big tap-water numbers count
A new analysis puts PFAS in water serving 197 million people. That counts detections. In EPA's final UCMR 5 data, 3,595 systems reported a PFAS and 1,149 averaged over the 4 ppt limit for PFOA or PFOS. State by state, and what each number means.
State PFAS funding lists name water systems EPA's survey doesn't have
Pennsylvania just approved PFAS money for systems that aren't in EPA's UCMR 5 data. Across 11 states, we compared named systems on state PFAS funding lists with the survey, and what the gap means for operators and engineers.
56,000 water systems were never in EPA's PFAS survey. Initial monitoring is due April 2027.
Every covered system must finish initial PFAS monitoring by April 26, 2027. How many samples each system type owes, when results you already have can count, how the results set future sampling, and why the EC-SDC grant won't pay for the monitoring itself.
Looking for rule changes and comment deadlines? See regulatory guidance & updates.