Tap Truth EPA drinking water records, in plain English

County drinking water records

Yakima County, WA drinking water systems

73 community water systems serve Yakima County, WA, reporting 249,451 people served in all. A system that also serves other counties counts all of its customers here.

10 of them (14%) had at least one health-based violation in the last 10 years. 6 systems still have one unresolved.

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

51 systems filed a lead service line inventory listing 10 lead lines, 449 galvanized lines that must be replaced and 4,635 lines of unknown material.

24 more systems are placed in Yakima 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
73
People served, sum of each system's own figure
249,451
Systems with a health-based violation, last 10 years
10
Systems with one unresolved
6
Lead service lines in inventories
10

Water systems serving Yakima County

73 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 Yakima Water Division Yakima 112,858 Surface water 0 0 0
Nob Hill Water Association Yakima, Ahtanum and 1 more 38,050 Groundwater 0 0 0
City of Sunnyside Sunnyside 17,194 Groundwater 0 2 0
City of Grandview Grandview 11,010 Groundwater 1 0 No inventory
City of Selah Selah 9,331 Groundwater 1 0 No inventory
Toppenish Water Department Toppenish 8,950 Groundwater 0 0 No inventory
Yak Co - Terrace Heights Terrace Heights 8,410 Groundwater 1 0 0
Union Gap Water Union Gap 6,433 Groundwater 0 0 10
Moxee Water Department Moxee 5,599 Groundwater 0 0 0
Wapato Waterworks Wapato and land outside it 5,255 Groundwater 0 0 0
Granger Water Department Granger 3,993 Groundwater 0 0 0
City of Zillah Zillah 3,518 Groundwater 1 0 No inventory
Town of Naches Naches 3,512 Groundwater 0 1 No inventory
City of Mabton Mabton 2,150 Groundwater 0 0 0
City of Tieton Water Dept Tieton 1,475 Groundwater 0 0 0
Harrah Water System Harrah 1,304 Groundwater 0 0 0
Yak Co - Buena Water System Buena 952 Groundwater 0 0 0
Tribal Complex Wapato and land outside it 907 Groundwater 1 0 0
White Swan White Swan and Wapato 900 Groundwater 7 2 0
Adams View Wapato and land outside it 790 Groundwater 0 0 0
Pomona View Mobile Park Outside cities and towns 470 Groundwater 0 0 No inventory
Sun Tides Vista Homeowners Assn Gleed 350 Groundwater 0 0 No inventory
Skyline Mobile Home Park Terrace Heights 340 Groundwater 0 0 No inventory
Parker Parker 300 Groundwater 1 0 0
Selah Hills Homeowners Cooperative Outside cities and towns 300 Groundwater 0 0 0
Outlook Community Water Outside cities and towns 282 Groundwater 0 0 0
Marys Garden Outside cities and towns 280 Groundwater 0 0 No inventory
Fort Simcoe Job Corps Ctr Toppenish and land outside it 230 Groundwater 8 8 0
Panorama Place Water Assn Outside cities and towns 220 Groundwater 0 0 0
Yak Co - Crewport Outside cities and towns 192 Groundwater 0 0 0
Country Mobile Estates Outside cities and towns 180 Groundwater 0 0 0
Lombard Loop Water Association Outside cities and towns 180 Groundwater 0 0 No inventory
Willow Tree Park Outside cities and towns 176 Groundwater 0 0 0
Alps Mobile Home Park Outside cities and towns 150 Groundwater 0 0 No inventory
Pomona Artesian Irrigation Company Outside cities and towns 150 Groundwater 0 0 0
High Valley Mobile Home Court Outside cities and towns 142 Groundwater 0 0 0
South Hills Water Users Assn Inc Outside cities and towns 135 Groundwater 0 0 0
Country Squire Mobile Manor Outside cities and towns 131 Groundwater 0 0 0
Selandia Manor Water Assn Outside cities and towns 130 Groundwater 0 0 0
Wolf Point Wapato and land outside it 125 Groundwater 0 0 0
Marquez Mobile Home Park Sunnyside 120 Groundwater 0 0 No inventory
Rainbow Court Grandview and land outside it 120 Groundwater 0 0 0
Yak Co - Gala Estates Water System Outside cities and towns 119 Groundwater 0 0 0
Moxie Community LLC Outside cities and towns 114 Groundwater 0 0 0
Butterfield Water Company Moxee 108 Groundwater 0 0 0
Sun-Tides RV Park Outside cities and towns 100 Groundwater 0 0 No inventory
Brocious Water System Outside cities and towns 100 Groundwater 0 0 0
Opr H2A Ahtanum 100 Groundwater 0 0 No inventory
Hillview Water Assn Outside cities and towns 95 Groundwater 0 0 No inventory
Cascadia Park Water Company Terrace Heights 93 Groundwater 0 0 No inventory
Burman Acres Water Outside cities and towns 92 Groundwater 0 0 0
Bridgeview Homesites Water Assn Outside cities and towns 80 Groundwater 0 0 0
Gleed Mobile Estates Gleed 76 Groundwater 0 0 No inventory
Tieton Hills Water Co Outside cities and towns 75 Groundwater 0 0 No inventory
Woodland Park Mobil Court Yakima 75 Groundwater 0 0 0
Wolfe Water Association Terrace Heights 70 Groundwater 0 0 No inventory
Hi Valley View Outside cities and towns 67 Groundwater 0 0 0
Playland Park Moxee 65 Groundwater 0 0 0
Sun Tides Community LLC Outside cities and towns 63 Groundwater 1 0 0
Neals Valley View Addition Wtr Co Terrace Heights 62 Groundwater 0 0 No inventory
Saddle Ridge Water Users Outside cities and towns 60 Groundwater 0 0 0
Starks Mobile Home Court Outside cities and towns 60 Groundwater 0 0 0
McAulays Home Sites Terrace Heights 58 Groundwater 0 0 0
Nagler Estates Water Users Assn Outside cities and towns 54 Groundwater 0 0 0
North Terra Vista Water Users Assn Terrace Heights 52 Groundwater 0 0 0
Cowiche Water Association Cowiche 48 Groundwater 0 0 0
Sun Acres Road & Water Assn Outside cities and towns 47 Groundwater 0 0 No inventory
B & D Mobile Court Zillah and land outside it 45 Groundwater 3 4 0
Bridle Moor Water Association Terrace Heights 44 Groundwater 0 0 0
Tampico Drive Well Owners Assn Tampico 42 Groundwater 0 0 0
Green Meadows Subdivision Gleed 32 Groundwater 0 1 0
Mt Adams Country Club Estates Outside cities and towns 31 Groundwater 0 0 No inventory
Brown Taylor Water Co Inc Outside cities and towns 30 Groundwater 0 0 0

Systems placed by county record in Yakima County

24 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
Sundquist Sunnyslope Domestic County on record 196 Groundwater 0 0 0
Sundquist TWH-Terrace Heights County on record 192 Groundwater 0 0 0
Richardson Water Company County on record 188 Groundwater 0 0 0
East Ridge Park County on record 150 Groundwater 0 0 0
Mountain View Estates County on record 120 Groundwater 0 0 No inventory
Bertsch Subdivision Water Assn County on record 100 Groundwater 0 0 0
Whispering Pines County on record 100 Groundwater 0 0 0
Valicoff Yvh H2A Housing County on record 96 Groundwater 0 0 No inventory
Yakima Golding Farms 1 County on record 90 Groundwater 0 0 0
Toop Water Assn Inc County on record 80 Groundwater 0 0 No inventory
Laura Lee Mobile Home Park County on record 72 Groundwater 0 0 No inventory
Country Club Estates HOA County on record 70 Groundwater 0 0 0
Wanapum Indian Village County on record 60 Groundwater 0 0 0
Green Valley Estates Water Assn County on record 53 Groundwater 0 0 No inventory
Terrace Park Water Association County on record 50 Groundwater 0 0 0
New Horizons County on record 49 Groundwater 0 0 0
Hillside Park Addition County on record 45 Groundwater 1 0 0
Rougk Well #2 County on record 36 Groundwater 0 0 No inventory
Druse Water Association County on record 32 Groundwater 0 0 0
Whittlesey Water System County on record 31 Groundwater 0 0 0
Charlene Heights Well Co County on record 30 Groundwater 0 0 0
Edgewater County on record 30 Groundwater 0 0 0
Pump 8 Domestic Water Assn County on record 30 Groundwater 0 0 No inventory
Naches RV Resort County on record 13 Groundwater 0 0 No inventory

Cities and towns in Yakima County

23 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