Is Zapata, Texas tap water safe?
4 water systems report serving Zapata. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.
B
Zapata County Waterworks Swtp
Serves 13,736 people · Surface water · Full report →
1 health-based violation in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
C
Falcon Rural WSC
Serves 3,600 people · Surface water · Full report →
1 health-based violation in the last 5 years; 15 monitoring/reporting violations; 3 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
B
Siesta Shores WCID
Serves 1,893 people · Surface water · Full report →
No health-based violations in the last 5 years; 9 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
B
Zapata County WCID Hwy 16 East
Serves 243 people · Surface water · Full report →
1 health-based violation in the last 5 years; 3 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).