COUNTY WATER-SYSTEM LEDGER
Multnomah, Oregon
EPA’s September 2026 export lists 7 active community water systems serving Multnomah, Oregon, 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 Multnomah, Oregon
EPA associates 7 covered systems with Multnomah, Oregon; their reported population-served values total 839,065 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 |
|---|---|---|---|
| Portland Water BureauOR4100657 | 666,200 | Surface water | Current health-based flag |
| Gresham, City OfOR4100357 | 73,932 | Surface water purchased | No current violation flagged |
| Rockwood PudOR4100668 | 65,443 | Surface water purchased | No current violation flagged |
| Troutdale, City OfOR4100901 | 16,185 | Ground water | No current violation flagged |
| Fairview, City OfOR4100296 | 9,963 | Ground water | No current violation flagged |
| Wood Village, City OfOR4100904 | 4,388 | Ground water | No current violation flagged |
| Corbett Water DistrictOR4100359 | 2,954 | Surface water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Multnomah, Oregon
EPA classifies 7 systems serving Multnomah, Oregon across 3 primary-source categories; Surface 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.