Oregon
Marion County drinking water quality
197 active public water systems serve 369,909 people in Marion County. 38 are compliant, 159 had at least one EPA violation in the past three years, 7 are designated serious violators, and 3 carry a health flag.
Needs attention
Community water systems
75 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
McLain Village Water Dept |
100 | 3 | 2 | |
|
Sunnyview Mobile Home Park |
100 | 3 | 1 | |
|
Alpine Crest Improvement Dist |
91 | 4 | 1 | |
|
Dunn Court Duplexes |
88 | 3 | 0 | |
|
Hiland WC Helton |
75 | 4 | 2 | |
|
Brewster Community Homeowners |
70 | 6 | 3 | |
|
Woodburn Mobile Estates |
70 | 4 | 2 | |
|
Jefferson Mobile Acres |
65 | 3 | 1 | |
|
Lakeshore Terrace |
60 | 3 | 1 | |
|
Olds Mobile Park |
60 | 3 | 1 | |
|
Lazy Acres Mobile Home Park |
59 | 4 | 2 | |
|
Hiland WC Heritage Water Company |
55 | 1 | 0 | |
|
62nd Court Mutual Water CO |
50 | 2 | 1 | |
|
Ralph Taylor Trailer Court |
45 | 6 | 1 | |
|
Silverton Mobile Estates |
45 | 1 | 0 | |
|
Century Farm Court |
42 | 1 | 0 | |
|
Duplex Village East |
41 | 2 | 1 | |
|
Grim Estates |
40 | 3 | 0 | |
|
Palo Mobile Home Park |
40 | 2 | 1 | |
|
Santiam Meadows Community WS |
40 | 1 | 0 | |
|
Scofield Mobile Home Court |
39 | 5 | 1 | |
|
Belle Passi Estates |
30 | 2 | 2 | |
|
Taylors Grove Water Works |
28 | 7 | 2 | |
|
Fox Hollow Estates Water Corp |
26 | 2 | 0 | |
|
Oakdale Trailer Park |
26 | 1 | 1 |
Non-community systems (122: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (148, 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.