County · Oregon
Benton County, Oregon: drinking water records
This overview covers 6 ZIP codes and 15 community water systems in Benton 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 |
|---|---|---|---|---|---|
| Corvallis, City of OR4100225 | 61,468 | 240 | 0 | 0 | 1.4 ppb |
| Philomath Public Works OR4100624 | 4,670 | 240 | 0 | 0 | 3.3 ppb |
| Adair Village Water System OR4100003 | 875 | 120 | 0 | 0 | 1.9 ppb |
| Monroe, City of OR4100540 | 723 | 0 | 0 | 26 | 1.5 ppb |
| Knoll Terrace Park OR4100174 | 452 | 0 | 0 | 1 | 1.1 ppb |
| North Corvallis Mhp-Well #1 OR4101158 | 100 | 0 | 0 | 1 | 6.4 ppb |
| Ridgewood Dist Improv Co OR4100229 | 90 | 0 | 0 | 1 | 2.1 ppb |
| Raintree Estates OR4105548 | 50 | 0 | 0 | 1 | 0 ppb |
| Jackson Creek Water Association OR4100977 | 39 | 0 | 0 | 1 | 0.8 ppb |
| Vineyard Mountain Water OR4100231 | 325 | 0 | 0 | 0 | 22.6 ppb |
| Alsea County Service District OR4100978 | 202 | 0 | 0 | 0 | 3.2 ppb |
| Fir View Water Company OR4100023 | 150 | 0 | 0 | 0 | 4.2 ppb |
| Cascade View Estates OR4101456 | 113 | 0 | 0 | 0 | 0 ppb |
| Berkeley Estates WV3300238 | 94 | 0 | 0 | 0 | 0.8 ppb |
| Pioneer Village Water Company OR4101296 | 80 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Benton 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.