Tap water in Port Lavaca, TX — ZIP 77979
2 public water systems serving about 16,482 people. PFAS "forever chemicals" have been detected here.
F
Failing
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 77979
City Of Port Lavaca
PWSID TX0290002 · serves 12,000 ·
surface water
14 health-based / 19 total violations (5 yrs)
· PFAS up to 16.3 ppt — above federal limit
Gbra Calhoun County Rural Water System
PWSID TX0290007 · serves 4,482 ·
surface water
11 health-based / 20 total violations (5 yrs)
· PFAS up to 51 ppt — above federal limit
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology