Is Eureka, Missouri tap water safe?
6 water systems report serving Eureka. 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.
A
Missouri American Water (St. Louis County)
Serves 1,111,000 people · Surface water · Full report →
No 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
Jefferson County PWSD 2
Serves 16,548 people · Surface water · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).
A
Jefferson County PWSD 6
Serves 7,500 people · Groundwater · Full report →
No 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
Mirasol Subdivision
Serves 2,012 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 (2025).
A
Hayfield Water Works
Serves 45 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
A
Villas at Fox Run
Serves 25 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file.