Tap water in Rio Grande City, TX — ZIP 78582
3 public water systems serving about 31,644 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 78582
City Of Rio Grande City
PWSID TX2140018 · serves 18,912 ·
surface water
2 health-based / 6 total violations (5 yrs)
· PFAS up to 6.1 ppt
Rio Wsc
PWSID TX2140016 · serves 6,939 ·
surface water
1 health-based / 7 total violations (5 yrs)
· PFAS up to 7.7 ppt
Union Wsc
PWSID TX2140004 · serves 5,793 ·
surface water
1 health-based / 7 total violations (5 yrs)
· PFAS up to 7.1 ppt
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology