Is Vandalia, Illinois tap water safe?
2 water systems report serving Vandalia. Your water depends on which one serves your address. Check your bill if unsure.
B
Vandalia
Serves 7,616 people · Surface water · Full report →
1 health-based violation in the last 5 years; 4 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
A
Kaskaskia Springs Water Co.
Serves 1 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file.