County · Oregon
Yamhill County, Oregon: drinking water records
This overview covers 11 ZIP codes and 38 community water systems in Yamhill County. It also stands in for 0 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 |
|---|---|---|---|---|---|
| Lafayette, City of OR4100452 | 4,423 | 360 | 0 | 3 | 0 ppb |
| Dundee, City of OR4100262 | 2,960 | 270 | 1 | 1 | 1.9 ppb |
| Mcminnville Water & Light OR4100497 | 34,515 | 120 | 0 | 0 | 1.3 ppb |
| Newberg, City of OR4100557 | 25,138 | 60 | 0 | 0 | 2.3 ppb |
| Sheridan, City of OR4100811 | 6,494 | 180 | 0 | 0 | 0 ppb |
| Dayton, City of OR4100252 | 2,535 | 0 | 0 | 1 | 0 ppb |
| Carlton, City of OR4100171 | 2,270 | 0 | 0 | 1 | 2.4 ppb |
| Amity, City of OR4100041 | 1,810 | 0 | 0 | 3 | 0 ppb |
| Cswa Chehalem Springs OR4101518 | 130 | 0 | 0 | 8 | 1.7 ppb |
| Pleasant View Water Co OR4101322 | 120 | 120 | 0 | 0 | 0 ppb |
| Hidden Meadows Water Assn INC OR4101464 | 110 | 0 | 0 | 1 | 3.2 ppb |
| Fox Ridge Water Co OR4101517 | 60 | 0 | 0 | 1 | 0.9 ppb |
| Cswa Oliver Spring OR4101519 | 40 | 0 | 0 | 3 | 0.6 ppb |
| Springbrook Water Association OR4100561 | 38 | 0 | 0 | 1 | 4 ppb |
| Hiland Wc - Wilderness OR4105940 | 20 | 0 | 0 | 1 | 1.6 ppb |
| Willamina, City of OR4100953 | 2,239 | 0 | 0 | 0 | 2.4 ppb |
| Yamhill, City of OR4100968 | 1,199 | 0 | 0 | 0 | 2.9 ppb |
| Delphian School OR4100812 | 350 | 0 | 0 | 0 | 1.1 ppb |
| Cove Orchard Water Association OR4101289 | 300 | 0 | 0 | 0 | 0.9 ppb |
| Northwest Newberg Water Assn OR4100560 | 250 | 0 | 0 | 0 | 0 ppb |
| Sunny Acres Water District OR4101163 | 130 | 0 | 0 | 0 | 0 ppb |
| Hopewell Water Company OR4100251 | 100 | 0 | 0 | 0 | 1.1 ppb |
| Valley View Water Co-Op OR4101339 | 99 | 0 | 0 | 0 | 4 ppb |
| Rock of Ages Rest Home OR4105157 | 97 | 0 | 0 | 0 | 0.7 ppb |
| East Yamhill Rural WD OR4101288 | 90 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Yamhill County
No ZIP report in this county is published yet.
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.