Oregon
Multnomah County drinking water quality
59 active public water systems serve 854,716 people in Multnomah County. 16 are compliant, 43 had at least one EPA violation in the past three years, 2 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
25 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Portland Water Bureau |
666,200 | 1 | 1 | |
|
Gresham, City of |
73,932 | 0 | 0 | |
|
Rockwood Pud |
65,443 | 0 | 0 | |
|
Troutdale, City of |
16,185 | 1 | 0 | |
|
Fairview, City of |
9,963 | 2 | 0 | |
|
Wood Village, City of |
4,388 | 0 | 0 | |
|
Corbett Water District |
2,954 | 2 | 0 | |
|
Pleasant Home Water District |
1,510 | 2 | 0 | |
|
Palatine Hill Water District |
1,500 | 1 | 0 | |
|
Lusted Water District |
1,200 | 1 | 0 | |
|
Valley View Water District |
1,034 | 2 | 0 | |
|
Interlachen Water Pud |
360 | 7 | 0 | |
|
Sandy Boulevard Mobile Villa |
350 | 1 | 0 | |
|
Burlington Water District |
340 | 2 | 0 | |
|
Manna House Church |
300 | 3 | 0 | |
|
Lorna Water District |
212 | 1 | 0 | |
|
Sigler Cove Marina |
150 | 2 | 0 | |
|
Rocky Pointe Marina |
125 | 1 | 0 | |
|
Mobile Village MHP LLC |
100 | 2 | 0 | |
|
Sauvie Island Moorage |
96 | 7 | 1 | |
|
Wapato Moorage Association |
74 | 1 | 0 | |
|
Terrand Mobile Terrace |
71 | 3 | 1 | |
|
Latourell Falls Township |
32 | 6 | 2 | |
|
Big Oak Marina |
30 | 9 | 2 | |
|
Mayfair Moorage INC |
30 | 1 | 0 |
Non-community systems (34: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (94, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Oregon records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.