PFAS & Lead in Houston Water: What the New EPA Rules Mean for You

Two of the biggest changes in U.S. drinking-water regulation in decades — on PFAS "forever chemicals" and on lead pipes — are rolling out right now, and Houston is squarely in the middle of both. Here is what changed, what it means for your home, and the one myth that could leave your family exposed.

What are PFAS, and are they in Houston's water?

PFAS (per- and polyfluoroalkyl substances) are synthetic "forever chemicals" used since the 1950s in nonstick coatings, firefighting foam, and packaging. They don't break down in the environment or in your body, and they're linked to kidney and testicular cancer, thyroid problems, and immune effects.

In April 2024, the EPA finalized the first-ever national PFAS drinking-water standards — 4.0 parts per trillion each for PFOA and PFOS. Houston's annual water report does not yet list finished-water PFAS results because PFAS are being tracked under the EPA's UCMR5 monitoring program, with five Houston-area systems currently testing for 29 PFAS compounds. In 2026 the federal compliance timeline is in flux — the EPA has proposed extending deadlines — but the direction is clear: PFAS are a recognized risk, and monitoring is expanding. Source: EPA PFAS rule.

What's happening with lead pipes in Houston?

In October 2024, the EPA finalized the Lead and Copper Rule Improvements (LCRI), requiring water systems nationwide to inventory every service line and replace lead lines within 10 years. This is a big deal in Houston, which has a very large number of service lines still classified as "unknown" material and a deep stock of older homes.

Lead doesn't usually come from the treatment plant — it leaches from old service lines, solder, and brass fixtures inside and near the home. Homes built before the 1988 Texas lead ban are most at risk. In Houston, that points to older neighborhoods like the Heights, Montrose, East End, Third Ward, and Independence Heights. Houston's 2024 report noted nine tap samples above the federal lead action level — a reminder that the risk is at the house, not the plant.

Does boiling water remove PFAS or lead?

No — and this is the most dangerous misconception in home water safety. Boiling water:

• Kills bacteria (the reason a boil-water notice is issued), but
• Does nothing to PFAS, lead, arsenic, or other chemicals and metals, and
• Concentrates them — as water turns to steam, the contaminants stay behind in a smaller volume.

So during Houston's 2022 citywide boil-water notice, boiling was the right call for microbes. But for the everyday chemical and metal contaminants in tap water, boiling is useless or counterproductive.

How do you actually remove PFAS and lead at home?

The EPA names three "Best Available Technologies" for PFAS — reverse osmosis, granular activated carbon, and ion exchange — and the same technologies handle lead:

• Reverse osmosis (under-sink) removes 90–99% of PFAS plus lead, arsenic, and most dissolved contaminants. This is the gold standard for drinking and cooking water.
• Certified carbon block filters reduce lead and many PFAS at the tap.
• Whole-home filtration protects every fixture, though point-of-use RO is essential for the lowest PFAS and lead levels in drinking water.

If you live in an older Houston neighborhood or have any reason to suspect lead service lines, the safest move is a certified RO system for drinking water plus a professional water test. See whether your home needs RO, a softener, or whole-home carbon.