Water quality in Lake Oswego, Oregon
Lake Oswego is in Clackamas County. 243 active public water systems serve the county; 186 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Clackamas County
86 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Lake Grove Water District |
3,100 | 1 | 1.7 mi | |
| Country Club Water District |
150 | 1 | 1.9 mi | |
| Mossy Brae Water District |
100 | 2 | 2.2 mi | |
| Rivergrove Water District |
4,000 | 2 | 2.2 mi | |
| Southwood Park Water District |
900 | 6 | 2.3 mi | |
| Hiland WC Shadow Wood |
175 | 2 | 2.4 mi | |
| Courtney Senior Estates |
80 | 2 | 3.2 mi | |
| Oak Lodge Water Services |
30,000 | 2 | 3.6 mi | |
| Milwaukie, City of |
20,946 | 6 | 4.3 mi | |
| West Linn, City of |
28,000 | 0 | 4.4 mi | |
| Gladstone, City of |
12,121 | 2 | 5.5 mi | |
| Oregon City |
33,940 | 0 | 7.2 mi | |
| Riverbend-Riverbank Community |
225 | 1 | 7.6 mi | |
| Wilsonville, City of |
25,915 | 2 | 7.9 mi | |
| Clackamas River Water |
29,918 | 2 | 8.2 mi | |
| Riverbend Mobile Home Park |
600 | 2 | 8.7 mi | |
| Canby Regency |
265 | 7 | 8.8 mi | |
| Riverview Mfgd Home Court |
400 | 1 | 9.6 mi | |
| Canby Utility |
18,754 | 1 | 10.0 mi | |
| Sunrise Water Authority |
50,003 | 0 | 10.0 mi | |
| Carver Mobile Ranch |
110 | 2 | 10.0 mi | |
| Barlow, City of |
135 | 3 | 11.1 mi | |
| Dietz Air Park Water System |
85 | 0 | 11.2 mi | |
| Excalibur Village |
180 | 1 | 11.8 mi | |
| Kingswood Heights Water Co-Op |
138 | 5 | 13.6 mi |
Non-community systems in Clackamas County (156: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Clackamas County, nearest to Lake Oswego first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Oregon records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.