County · Oregon
Polk County, Oregon: drinking water records
This overview covers 6 ZIP codes and 13 community water systems in Polk 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 |
|---|---|---|---|---|---|
| Dallas, City of OR4100248 | 17,911 | 119 | 0 | 2 | 4.3 ppb |
| Monmouth, City of OR4100537 | 11,651 | 120 | 0 | 0 | 0 ppb |
| Independence Water System OR4100399 | 10,300 | 120 | 1 | 0 | 3 ppb |
| Rickreall Water Association OR4100704 | 1,650 | 0 | 0 | 1 | 3.9 ppb |
| Falls City, City of OR4100297 | 1,051 | 120 | 0 | 0 | 1.3 ppb |
| Buell-Red Prairie WD OR4101174 | 800 | 0 | 0 | 3 | 1.3 ppb |
| Rock Creek Water District OR4100337 | 300 | 0 | 0 | 2 | 2 ppb |
| Pioneer Park Co-Op INC OR4100784 | 54 | 0 | 0 | 1 | 0 ppb |
| Luckiamute Domestic Water Coop OR4100538 | 2,738 | 0 | 0 | 0 | 2 ppb |
| Perrydale Domestic Wtr Assn OR4101149 | 2,655 | 0 | 0 | 0 | 0 ppb |
| Grand Ronde Community Wtr Assn OR4100338 | 2,500 | 0 | 0 | 0 | 2.3 ppb |
| Orchard Heights Water Assn OR4100783 | 381 | 0 | 0 | 0 | 1.5 ppb |
| Watford City Mobile Home Park ND2701003 | 52 | 0 | 0 | 0 | 3.1 ppb |
ZIP reports in Polk 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.