Is Harrisburg, Illinois tap water safe?
1 water system report serving Harrisburg. Your water depends on which one serves your address. Check your bill if unsure.
C
Harrisburg
Serves 8,524 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 6 monitoring/reporting violations; 1 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).