COUNTY WATER-SYSTEM LEDGER
Walla Walla, Washington
EPA’s September 2026 export lists 3 active community water systems serving Walla Walla, Washington, with 0 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 Walla Walla, Washington
EPA associates 3 covered systems with Walla Walla, Washington; their reported population-served values total 54,142 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 |
|---|---|---|---|
| Walla Walla Water DivisionWA5392500 | 42,959 | Surface water | No current violation flagged |
| College Place Water DeptWA5314050 | 8,147 | Ground water | No current violation flagged |
| Snake River Housing Water SystemWA5300710 | 3,036 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Walla Walla, Washington
EPA classifies 3 systems serving Walla Walla, Washington across 2 primary-source categories; Surface water is the largest category with 1 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.