HILLSBORO, CITY OF
Oregon — Community Water System — PWSID: OR4101513
System Information
| PWSID | OR4101513 |
| System Name | HILLSBORO, CITY OF |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Sep 3, 2008 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | HILLSBORO |
| ZIP Code | 97123 |
| Address | 150 E MAIN ST |
| Organization | HILLSBORO, CITY OF |
| Phone | 503-615-6579 |
Population & Service
| Population Served | 92,632 |
| Service Connections | 28,385 |
Drinking Water Violations (9)
This water system has 9 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Jul 8, 2025 | — | |
| Jun 1, 2016 | Jun 30, 2016 | MON | No | No | — | — | — | Resolved | Jun 30, 2016 | — | |
| Apr 1, 2010 | Apr 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2010 | — | |
| Apr 1, 2010 | Apr 30, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2010 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2009 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Jul 31, 2009 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2009 | — | |
| Jul 1, 2009 | Jul 31, 2009 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Jul 31, 2009 | — | |
| — | — | — | No | No | — | — | — | — | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.