Washington
Clark County drinking water quality
72 active public water systems serve 653,450 people in Clark County. 58 are compliant, 14 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
25 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Vancouver City of |
373,047 | 0 | 0 | |
|
Clark Public Utilities |
153,526 | 0 | 0 | |
|
Camas Municipal Water Sewer System |
31,794 | 2 | 0 | |
|
Battle Ground Water Dept City of |
30,237 | 1 | 0 | |
|
Washougal City of |
21,441 | 0 | 0 | |
|
Ridgefield Public Works |
21,225 | 0 | 0 | |
|
Yacolt |
3,034 | 0 | 0 | |
|
Amboy Clark Public Utilities |
991 | 0 | 0 | |
|
Larch Corrections Center |
705 | 0 | 0 | |
|
Country Manor Mobile Home Park |
450 | 0 | 0 | |
|
Vista del Rio Mobile Home Park |
352 | 0 | 0 | |
|
Great Western Mobile Home Park |
250 | 0 | 0 | |
|
Oak Meadows Mobile Home Park |
216 | 2 | 0 | |
|
Woodland MHC LLC |
209 | 1 | 0 | |
|
Brookside |
100 | 0 | 0 | |
|
Hillcrest Manor |
100 | 2 | 1 | |
|
Single Tree Acres |
90 | 0 | 0 | |
|
Green Mountain Mobile Ranch |
80 | 0 | 0 | |
|
Morning Meadows |
75 | 0 | 0 | |
|
Vanridge Mobile Home Park |
71 | 0 | 0 | |
|
Parkside Airpark Owners |
66 | 0 | 0 | |
|
Tukes Mountain Homeowners |
60 | 0 | 0 | |
|
Magna Vista Water Corp |
56 | 0 | 0 | |
|
Estates at Livingston Mtn |
33 | 1 | 0 | |
|
Bridge Road |
25 | 0 | 0 |
Non-community systems (47: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (259, 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 Washington 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.