COUNTY WATER-SYSTEM LEDGER
Clark, Illinois
EPA’s September 2026 export lists 3 active community water systems serving Clark, Illinois, with 2 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Clark, Illinois
EPA associates 3 covered systems with Clark, Illinois; their reported population-served values total 16,878 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Clark-Edgar RwdIL0230010 | 9,657 | Ground water | No current violation flagged |
| MarshallIL0230100 | 3,947 | Ground water | Other current violation flag |
| CaseyIL0230050 | 3,274 | Ground water purchased | Current monitoring/reporting flag |
02 / SOURCE MIX
Primary water sources for Clark, Illinois
EPA classifies 3 systems serving Clark, Illinois across 2 primary-source categories; Ground water is the largest category with 2 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.