COUNTY WATER-SYSTEM LEDGER
Rock Island, Illinois
EPA’s September 2026 export lists 7 active community water systems serving Rock Island, Illinois, with 3 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 Rock Island, Illinois
EPA associates 7 covered systems with Rock Island, Illinois; their reported population-served values total 128,983 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 |
|---|---|---|---|
| MolineIL1610450 | 44,500 | Surface water | No current violation flagged |
| Rock IslandIL1610650 | 39,018 | Surface water | Other current violation flag |
| East MolineIL1610250 | 21,374 | Surface water | No current violation flagged |
| Rock Island Arsenal, US ArmyIL1615387 | 7,800 | Surface water | No current violation flagged |
| SilvisIL1610700 | 7,473 | Surface water purchased | Current health-based flag |
| MilanIL1610400 | 4,945 | Ground water | Current monitoring/reporting flag |
| Coal ValleyIL1614260 | 3,873 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Rock Island, Illinois
EPA classifies 7 systems serving Rock Island, Illinois across 3 primary-source categories; Surface water is the largest category with 4 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.