County · Oregon
Clackamas County, Oregon: drinking water records
This overview covers 24 ZIP codes and 88 community water systems in Clackamas 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 |
|---|---|---|---|---|---|
| Oak Lodge Water Services OR4101512 | 30,000 | 120 | 0 | 1 | 2.7 ppb |
| Sandy, City of OR4100789 | 12,991 | 300 | 0 | 10 | 13 ppb |
| Gladstone, City of OR4100321 | 12,121 | 120 | 0 | 8 | 3.3 ppb |
| Estacada, City of OR4100279 | 5,750 | 120 | 1 | 2 | 2.1 ppb |
| Sunrise Water Authority OR4100635 | 50,003 | 480 | 1 | 0 | 3 ppb |
| Lake Oswego Municipal Water OR4100457 | 40,000 | 120 | 0 | 0 | 0 ppb |
| Oregon City OR4101511 | 33,940 | 120 | 0 | 0 | 1.8 ppb |
| Clackamas River Water OR4100187 | 29,918 | 120 | 0 | 0 | 1.7 ppb |
| West Linn, City of OR4100944 | 28,000 | 120 | 0 | 0 | 1.8 ppb |
| Wilsonville, City of OR4100954 | 25,915 | 120 | 0 | 0 | 7.6 ppb |
| Milwaukie, City of OR4100528 | 20,946 | 180 | 1 | 0 | 0 ppb |
| Clackamas River Water - Clairmont OR4100594 | 19,928 | 120 | 0 | 0 | 2.0 ppb |
| Canby Utility OR4100157 | 18,754 | 120 | 0 | 0 | 2.1 ppb |
| Molalla, City of OR4100534 | 10,298 | 120 | 1 | 0 | 1.3 ppb |
| Rivergrove Water District OR4100461 | 4,000 | 180 | 0 | 0 | 2.7 ppb |
| Boring Water District No 24 OR4100135 | 2,500 | 0 | 0 | 1 | 1.2 ppb |
| Colton Water District OR4100202 | 1,500 | 0 | 0 | 7 | 1.6 ppb |
| Rhododendron Wtr Assoc OR4100702 | 980 | 0 | 0 | 3 | 4.1 ppb |
| Southwood Park Water District OR4100638 | 900 | 0 | 0 | 1 | 0.2 ppb |
| Timberline Rim Water Co INC OR4100639 | 800 | 0 | 0 | 1 | 6.1 ppb |
| Alder Creek Barlow Water Dist OR4100630 | 300 | 0 | 0 | 3 | 0.4 ppb |
| Canby Regency OR4100163 | 265 | 0 | 0 | 4 | 1.3 ppb |
| Petes Mountain Water Co OR4100161 | 250 | 0 | 0 | 2 | 0 ppb |
| Mt Hood RV Village OR4194548 | 200 | 0 | 0 | 1 | 1.3 ppb |
| Skyview Acres Water Company OR4100786 | 200 | 0 | 0 | 45 | 7 ppb |
ZIP reports in Clackamas 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.