GRAHAM CORRECTIONAL SITE
PWS ID: IL1355100 · HILLSBORO, Illinois 62049
Population Served
2,155
Total Violations
7
Health-Based Violations
0
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- State
- Connections
- 17
- County
- Montgomery
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.