COUNTY WATER-SYSTEM LEDGER
Rock, Wisconsin
EPA’s September 2026 export lists 5 active community water systems serving Rock, Wisconsin, with 1 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, Wisconsin
EPA associates 5 covered systems with Rock, Wisconsin; their reported population-served values total 117,895 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 |
|---|---|---|---|
| Janesville Water UtilityWI1540127 | 64,415 | Ground water | No current violation flagged |
| Beloit City OfWI1540112 | 36,677 | Ground water | No current violation flagged |
| Evansville WaterworksWI1540047 | 5,703 | Ground water | No current violation flagged |
| Milton WaterworksWI1540130 | 5,588 | Ground water | No current violation flagged |
| Edgerton WaterworksWI1540119 | 5,512 | Ground water | Other current violation flag |
02 / SOURCE MIX
Primary water sources for Rock, Wisconsin
EPA classifies 5 systems serving Rock, Wisconsin across 1 primary-source categories; Ground water is the largest category with 5 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.