County · Oregon
Multnomah County, Oregon: drinking water records
This overview covers 34 ZIP codes and 25 community water systems in Multnomah 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 |
|---|---|---|---|---|---|
| Portland Water Bureau OR4100657 | 666,200 | 180 | 0 | 1 | 4.9 ppb |
| Fairview, City of OR4100296 | 9,963 | 120 | 0 | 1 | 6.9 ppb |
| Gresham, City of OR4100357 | 73,932 | 119 | 0 | 0 | 3.4 ppb |
| Rockwood PUD OR4100668 | 65,443 | 120 | 0 | 0 | 4.6 ppb |
| Troutdale, City of OR4100901 | 16,185 | 240 | 0 | 0 | 2.5 ppb |
| Wood Village, City of OR4100904 | 4,388 | 180 | 0 | 0 | 1.4 ppb |
| Corbett Water District OR4100359 | 2,954 | 120 | 0 | 0 | 6.2 ppb |
| Interlachen Water PUD OR4100902 | 360 | 0 | 0 | 3 | 1.6 ppb |
| Manna House Church OR4101267 | 300 | 0 | 0 | 1 | 0.7 ppb |
| Sauvie Island Moorage OR4101209 | 96 | 0 | 0 | 1 | 0 ppb |
| Big Oak Marina OR4106054 | 30 | 0 | 0 | 2 | 10 ppb |
| Pleasant Home Water District OR4100360 | 1,510 | 0 | 0 | 0 | 4.9 ppb |
| Palatine Hill Water District OR4100653 | 1,500 | 0 | 0 | 0 | 4.9 ppb |
| Lusted Water District OR4100361 | 1,200 | 0 | 0 | 0 | 4 ppb |
| Valley View Water District OR4100661 | 1,034 | 0 | 0 | 0 | 4.9 ppb |
| Sandy Boulevard Mobile Villa OR4101262 | 350 | 0 | 0 | 0 | 0 ppb |
| Burlington Water District OR4100644 | 340 | 0 | 0 | 0 | 4.9 ppb |
| Lorna Water District OR4100662 | 212 | 0 | 0 | 0 | 4.9 ppb |
| Sigler Cove Marina OR4101460 | 150 | 0 | 0 | 0 | 3.7 ppb |
| Rocky Pointe Marina OR4101251 | 125 | 0 | 0 | 0 | 13 ppb |
| Mobile Village MHP LLC OR4100984 | 100 | 0 | 0 | 0 | 2.6 ppb |
| Wapato Moorage Association OR4101510 | 74 | 0 | 0 | 0 | 0 ppb |
| Terrand Mobile Terrace OR4101157 | 71 | 0 | 0 | 0 | 0.8 ppb |
| Latourell Falls Township OR4101217 | 32 | 0 | 0 | 0 | 0.5 ppb |
| Mayfair Moorage INC OR4101258 | 30 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Multnomah 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.