Water quality in Hillsboro, Oregon
Hillsboro is in Washington County. 97 active public water systems serve the county; 70 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 Washington County
28 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Westview Mobile Estates |
250 | 2 | 5.0 mi | |
| Tualatin Valley Water District |
224,600 | 0 | 5.0 mi | |
| North Plains Water Department |
3,663 | 1 | 5.5 mi | |
| Cornelius, City of |
14,490 | 2 | 5.6 mi | |
| South Hills Water System |
250 | 0 | 6.0 mi | |
| Beaverton, City of |
88,045 | 1 | 7.1 mi | |
| West Slope Water District |
11,000 | 2 | 8.6 mi | |
| Wolsborn Farms Water District |
92 | 2 | 8.9 mi | |
| Raleigh Water District |
4,500 | 1 | 9.2 mi | |
| Laurel Acres Water CO INC |
50 | 4 | 9.3 mi | |
| Laurelwood Water Users |
200 | 6 | 9.5 mi | |
| Tigard, City of |
62,500 | 2 | 10.2 mi | |
| Forest Grove, City of |
26,838 | 0 | 10.3 mi | |
| Banks Water Department |
2,070 | 0 | 10.4 mi | |
| LA Water Co-Op |
2,500 | 2 | 11.4 mi | |
| Gaston, City of |
625 | 2 | 12.0 mi | |
| Star Satellite Improv Dist |
400 | 1 | 12.0 mi | |
| Hillsboro-Cherry Grove |
1,628 | 3 | 12.4 mi | |
| Sherwood, City of |
20,781 | 1 | 12.4 mi | |
| Tualatin, City of |
28,106 | 1 | 13.0 mi | |
| Crown Mobile Home Park |
42 | 3 | 14.4 mi | |
| Fir Grove Homeowners Assn |
450 | 2 | — | |
| Timber Water Association |
180 | 9 | — | |
| Parrett Mountain View Estates |
155 | 1 | — | |
| West Laurel Acres Water CO |
65 | 3 | — |
Non-community systems in Washington County (68: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Washington County, nearest to Hillsboro 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.