Lead in tap water: where it comes from, what the federal rule now requires, and what actually reduces it at your tap
Unlike the PFAS rule the EPA moved to cut in 2026, the federal lead rule is getting stronger, not weaker — the Lead and Copper Rule Improvements are phasing in now, with the action level dropping to 10 ppb in November 2027 and a mandate to replace nearly all of the country's ~9 million lead service lines by around 2037. Here's what the rule actually requires, how to find out if you have a lead line, and which filters are certified to reduce lead — sourced to EPA, CDC, and NSF.
- water
- lead
- filtration