State
Oregon: drinking water records
EPA lists 947 community water systems serving homes in Oregon. 123 took part in EPA's national PFAS survey (UCMR 5), and 17 found at least one PFAS above the level laboratories can measure.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
PFAS in EPA’s final survey
17 of the 123 Oregon systems in EPA’s national PFAS survey found at least one PFAS, and 9 had a PFOA or PFOS yearly average at or above EPA’s limit. See Oregon’s PFAS results by system and compound.
Counties
- Baker County 9 systems
- Benton County 14 systems
- Clackamas County 87 systems
- Clatsop County 21 systems
- Columbia County 37 systems
- Coos County 23 systems
- Crook County 18 systems
- Curry County 12 systems
- Deschutes County 68 systems
- Douglas County 37 systems
- Gilliam County 3 systems
- Grant County 8 systems
- Harney County 5 systems
- Hood River County 6 systems
- Jackson County 69 systems
- Jefferson County 5 systems
- Josephine County 35 systems
- Klamath County 29 systems
- Lake County 3 systems
- Lane County 72 systems
- Lincoln County 35 systems
- Linn County 40 systems
- Malheur County 8 systems
- Marion County 76 systems
- Morrow County 8 systems
- Multnomah County 25 systems
- Polk County 12 systems
- Sherman County 4 systems
- Tillamook County 35 systems
- Umatilla County 35 systems
- Union County 10 systems
- Wallowa County 5 systems
- Wasco County 22 systems
- Washington County 29 systems
- Wheeler County 3 systems
- Yamhill County 38 systems
ZIP reports
Sources
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. Database prepared 2026-09-03.
