Water quality in Oak Harbor, Washington
Oak Harbor is in Island County. 308 active public water systems serve the county; 212 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Island County
233 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Crescent Acres Water Association |
64 | 2 | 1.7 mi | |
| Valley High Park |
141 | 1 | 1.8 mi | |
| Naval Air Station/whidbey Island |
16,595 | 0 | 2.0 mi | |
| Suburban Hills Community Assoc |
46 | 2 | 2.0 mi | |
| Highland Trace Water CO INC |
62 | 1 | 2.1 mi | |
| Parkwood Manor MHP |
301 | 0 | 2.1 mi | |
| Westview Community Association |
43 | 0 | 2.2 mi | |
| Maple Hill Park |
35 | 4 | 2.2 mi | |
| Fir Grove Mobile Park |
65 | 2 | 2.2 mi | |
| Indian Ridge Water Company |
120 | 2 | 2.2 mi | |
| Eastgate |
76 | 2 | 2.3 mi | |
| Little Valley Apts. |
30 | 1 | 2.3 mi | |
| West Ridge Water System |
275 | 0 | 2.3 mi | |
| Bayview Estates Water Company |
227 | 1 | 2.4 mi | |
| Bets Water System |
50 | 4 | 2.4 mi | |
| Crosswoods Water System |
420 | 1 | 2.4 mi | |
| West View Apartments Water System |
54 | 2 | 2.5 mi | |
| Fairway Estates INC |
100 | 2 | 2.5 mi | |
| Bonnie View Water |
50 | 2 | 2.6 mi | |
| Wagon Wheel |
150 | 1 | 2.6 mi | |
| Island Park Mobile Home Park |
60 | 2 | 2.6 mi | |
| Whispering Pines Homeowners Coop |
116 | 1 | 2.6 mi | |
| Hillcrest Village Water CO INC |
770 | 1 | 2.7 mi | |
| Pine Terrace Water Association |
181 | 1 | 2.7 mi | |
| Country Place Mobile Home Park |
200 | 2 | 2.8 mi |
Non-community systems in Island County (74: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Island County, nearest to Oak Harbor first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.