City and town drinking water records
Water systems serving Oak Harbor, WA
7 community water systems have a mapped service area in Oak Harbor, WA. City of Oak Harbor covers 53% of the area inside Oak Harbor's Census boundary and reports serving 23,767 people in all.
None of them had a health-based violation in the last 10 years.
5 rely mainly on groundwater and 2 on surface water, counting water bought from other systems.
2 systems filed a lead service line inventory listing 0 lead lines, 0 galvanized lines that must be replaced and 633 lines of unknown material.
- Community water systems
- 7
- Systems with a health-based violation, last 10 years
- 0
- Systems with one unresolved
- 1
- Lead service lines in inventories
- 0
Water systems serving Oak Harbor
7 systemsPeople served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.
| System | Area | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| City of Oak Harbor | Covers 53% of Oak Harbor | 23,767 | Purchased surface water | 0 | 0 | 0 |
| Naval Air Station/Whidbey Island | Covers 41% of Oak Harbor | 16,595 | Purchased surface water | 0 | 0 | 0 |
| Swantown Water District | Mapped area inside Oak Harbor | 318 | Groundwater | 0 | 1 | No inventory |
| Westview Community Association | Mapped area inside Oak Harbor | 43 | Groundwater | 0 | 0 | No inventory |
| Parkwood Manor MHP | Mapped area inside Oak Harbor | 301 | Groundwater | 0 | 0 | No inventory |
| West View Apartments Water System | Mapped area inside Oak Harbor | 54 | Groundwater | 0 | 0 | No inventory |
| Fir Grove Mobile Park | Mapped area inside Oak Harbor | 65 | Groundwater | 0 | 0 | No inventory |
Other cities and towns in Island County
6 placesCounties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations