Is Columbia, Louisiana tap water safe?
4 water systems report serving Columbia. 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.
D
Southwest Ouachita Waterworks, Inc
Serves 10,725 people · Groundwater · Full report →
4 health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Hebert Water System
Serves 3,048 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
C
East Columbia Water System
Serves 2,829 people · Groundwater · Full report →
3 health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A
Village of Columbia Water System
Serves 945 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).