Is Du Quoin, Illinois tap water safe?
2 water systems report serving Du Quoin. Your water depends on which one serves your address. Check your bill if unsure.
C
Duquoin
Serves 7,169 people · Surface water · Full report →
1 health-based violation in the last 5 years; 7 monitoring/reporting violations; 2 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).
A
Crossroads MHP
Serves 53 people · Surface water · 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 (2026).