PFAS in Brownsville Public Utilities Board water (Texas)

Brownsville Public Utilities Board is a large public water system serving more than 10,000 people in Texas (ZIP codes 78520, 78521, 78526). EPA UCMR 5 monitoring (2023–2025) detected 7 PFAS compounds in its water, the highest being PFBA at 9.3 ppt. This includes PFOA at 4.7 ppt and PFOS at 9.2 ppt. This page shows every detected level and the certified filters that reduce PFAS.

What was detected

Each figure is the highest single detected level recorded for that compound — not an average.

For context, the U.S. EPA has set a federal reference level of 4 parts per trillion for PFOA and for PFOS; it is shown beside those compounds above purely as a reference point.

How to reduce PFAS in this water

Your only flagged issue is PFAS / PFOA / PFOS, which harms you through what you drink — not through bathing or showering. A certified under-sink reverse-osmosis system (~$300–$600) is the correct, certified way to remove it. A $1,500–$4,000 whole-house system would be overkill here and still wouldn’t be the certified method for these contaminants.

Certified point-of-use filters (the practical, certified fix)

If you want PFAS reduced at every tap (optional)

Point-of-use reverse osmosis above is the default, certified answer for PFAS. If you specifically want reduction at every tap, these are the whole-house units with a genuine third-party certification for PFOA/PFOS — an optional add-on, not a necessity.