Water quality for ZIP code 98923
ZIP 98923 covers Cowiche in Yakima County, Washington, one of 20 ZIP codes in the county. 222 active public water systems serve the county; 67 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 Yakima County
88 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Tieton Water Dept City of |
1,475 | 0 | 3.2 mi | |
| Starks Mobile Home Court |
60 | 0 | 4.3 mi | |
| Naches Town of |
3,512 | 3 | 4.5 mi | |
| Gleed Mobile Estates |
76 | 0 | 5.6 mi | |
| Tieton Hills Water CO |
75 | 0 | 6.0 mi | |
| Green Meadows Subdivision |
32 | 1 | 6.5 mi | |
| Sun Tides Community LLC |
63 | 0 | 6.6 mi | |
| Sun Tides Vista Homeowners Assn |
350 | 0 | 6.6 mi | |
| Saddle Ridge Water Users |
60 | 0 | 6.7 mi | |
| Marys Garden |
280 | 0 | 6.9 mi | |
| Brown Taylor Water CO INC |
30 | 0 | 7.0 mi | |
| Nob Hill Water Association |
38,050 | 0 | 7.7 mi | |
| Selah City of |
9,331 | 0 | 8.6 mi | |
| Selandia Manor Water Assn |
130 | 0 | 8.7 mi | |
| Brocious Water System |
100 | 0 | 8.9 mi | |
| Nagler Estates Water Users Assn |
54 | 1 | 9.1 mi | |
| Opr H2a |
100 | 0 | 9.3 mi | |
| High Valley Mobile Home Court |
142 | 1 | 9.4 mi | |
| Selah Hills Homeowners Cooperative |
300 | 0 | 9.4 mi | |
| Hillview Water Assn |
95 | 0 | 9.6 mi | |
| Woodland Park Mobil Court |
75 | 0 | 10.0 mi | |
| Bridgeview Homesites Water Assn |
80 | 1 | 10.2 mi | |
| Yakima Water Division City of |
112,858 | 1 | 10.3 mi | |
| Sun-Tides RV Park |
100 | 1 | 10.7 mi | |
| Yak CO Gala Estates Water System |
119 | 2 | 11.0 mi |
Non-community systems in Yakima County (133: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Yakima County, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.