Tap Truth EPA drinking water records, in plain English

County drinking water records

Okanogan County, WA drinking water systems

40 community water systems serve Okanogan County, WA, reporting 28,268 people served in all. A system that also serves other counties counts all of its customers here.

2 of them (5%) had at least one health-based violation in the last 10 years. 2 systems still have one unresolved.

39 rely mainly on groundwater and 1 on surface water, counting water bought from other systems.

22 systems filed a lead service line inventory listing 1 lead line, 568 galvanized lines that must be replaced and 268 lines of unknown material.

4 more systems are placed in Okanogan County, WA by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
40
People served, sum of each system's own figure
28,268
Systems with a health-based violation, last 10 years
2
Systems with one unresolved
2
Lead service lines in inventories
1

Water systems serving Okanogan County

40 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
City of Omak Omak 4,940 Groundwater 0 0 0
City of Oroville Oroville and land outside it 3,256 Groundwater 0 0 0
City of Brewster Brewster 3,235 Groundwater 0 0 0
City of Okanogan Water Department Okanogan 2,921 Groundwater 0 0 0
Tonasket Water System Tonasket 2,392 Groundwater 0 0 0
Coulee Dam Water Dept Coulee Dam 1,454 Surface water 0 0 1
Town of Winthrop Winthrop 1,350 Groundwater 0 0 No inventory
Pateros Water Department Pateros 1,149 Groundwater 0 0 No inventory
Town of Twisp Twisp 1,055 Groundwater 0 0 0
Jaw Farms Inc Malott 636 Groundwater 0 0 No inventory
Duck Lake Water Association Outside cities and towns 635 Groundwater 0 0 0
Brewster Flat Domestic Water Assn Outside cities and towns 542 Groundwater 0 0 0
Nespelem Water Dept Nespelem 510 Groundwater 0 0 0
P and G Orchards Camp 2 Outside cities and towns 489 Groundwater 0 0 No inventory
Town of Riverside Riverside 429 Groundwater 0 2 No inventory
Elmer City Water System Elmer City 368 Groundwater 0 0 0
Progressive Flat Water Assn Outside cities and towns 335 Purchased groundwater 1 0 No inventory
Sandflat Water Association Outside cities and towns 260 Groundwater 0 0 0
Suncrest Plat Water System Outside cities and towns 260 Groundwater 0 0 0
Coleman Butte Water Assn Outside cities and towns 250 Groundwater 0 0 No inventory
Loomis Water Users Assn Inc Outside cities and towns 225 Groundwater 0 0 No inventory
Alta Lake Golf Course Plat Outside cities and towns 161 Groundwater 0 0 0
River Road Mobile Home Park Outside cities and towns 150 Groundwater 1 0 No inventory
Aston Estates Outside cities and towns 141 Groundwater 0 0 0
Crumbacher Estates Water System Outside cities and towns 111 Groundwater 0 0 0
Homestead Mobile Home Park North Omak 105 Groundwater 0 0 No inventory
M J Trailer Ranch Outside cities and towns 100 Groundwater 0 0 0
Edelweiss Maintenance Commission Outside cities and towns 95 Groundwater 0 1 No inventory
Pine Forest Water System Outside cities and towns 90 Groundwater 0 0 No inventory
Old Orchard Estates Water System Outside cities and towns 86 Groundwater 0 0 0
Lost River Airport Association Outside cities and towns 72 Groundwater 0 0 No inventory
Wolf Creek Property Owners Assn Outside cities and towns 71 Groundwater 0 0 0
Pinecrest Subdivison Owners Outside cities and towns 63 Groundwater 0 0 0
Vista Vue Water Users Assn Outside cities and towns 60 Groundwater 0 0 0
Emanuel Heights Water System Outside cities and towns 60 Groundwater 0 0 No inventory
Appleway Trailer Court Outside cities and towns 54 Groundwater 0 0 No inventory
Johnson Creek Water Users Assn Conconully 48 Groundwater 0 0 No inventory
Methow Water System Inc Outside cities and towns 45 Groundwater 0 0 No inventory
Many Lakes Mobile Home Park Outside cities and towns 37 Groundwater 0 0 0
Valley View Estates Water System Outside cities and towns 28 Groundwater 0 0 No inventory

Systems placed by county record in Okanogan County

4 systems

EPA has no service area map for some of these systems, and the maps it has for the others do not line up with their own records. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Monse-Riggan Camp County on record 1,165 Groundwater 1 1 No inventory
Paschal Sherman Indian School County on record 220 Groundwater 5 0 0
Hi-Color Orchard Farmworker Housing County on record 53 Groundwater 0 0 0
Twin Pines Mobile Home Park County on record 25 Groundwater 0 2 No inventory

Cities and towns in Okanogan County

15 places

Back to Washington

Counties 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