County · Oregon
Crook County, Oregon: drinking water records
This overview covers 4 ZIP codes and 18 community water systems in Crook County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Prineville, City of OR4100682 | 11,000 | 300 | 0 | 0 | 2.1 ppb |
| High Desert Estates OR4101457 | 380 | 0 | 0 | 1 | 0 ppb |
| Barnes Butte HOA OR4101169 | 148 | 0 | 0 | 1 | 0 ppb |
| Westridge Subdivision OR4105998 | 78 | 0 | 0 | 2 | 0.9 ppb |
| Mcdougal Water System OR4105879 | 60 | 0 | 0 | 1 | 0 ppb |
| Avion Wc - Brasada Ranch OR4101506 | 1,200 | 0 | 0 | 0 | 2.8 ppb |
| Avion Wc - Red Cloud OR4101203 | 585 | 0 | 0 | 0 | 0 ppb |
| Ochoco West Wtr & San Authority OR4100681 | 400 | 0 | 0 | 0 | 3.7 ppb |
| Highland Subdivision WD OR4101195 | 335 | 0 | 0 | 0 | 0 ppb |
| Idleway Improvement District OR4101208 | 183 | 0 | 0 | 0 | 0.9 ppb |
| Terrace Mobile Plaza OR4100193 | 152 | 0 | 0 | 0 | 0 ppb |
| Prineville Mobile Home Park OR4101317 | 130 | 0 | 0 | 0 | 1 ppb |
| Quail Valley Park Improv Dist OR4100683 | 110 | 0 | 0 | 0 | 0.7 ppb |
| Ochoco Valley Home Improv Dist OR4100680 | 60 | 0 | 0 | 0 | 1.7 ppb |
| Dry Creek Airpark OR4106110 | 58 | 0 | 0 | 0 | 0 ppb |
| Shoun Crossroads OR4105239 | 41 | 0 | 0 | 0 | 0.5 ppb |
| Sunset Hills Domestic Water Association OR4105258 | 41 | 0 | 0 | 0 | 1.5 ppb |
| Happy Hollow Water Company OR4101353 | 40 | 0 | 0 | 0 | 1.3 ppb |
ZIP reports in Crook County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 97751, 97752.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.