WASCO, CITY OF
Oregon — Community Water System — PWSID: OR4100935
System Information
| PWSID | OR4100935 |
| System Name | WASCO, CITY OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 12, 1979 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | WASCO |
| ZIP Code | 97065 |
| Address | PO BOX 26 |
| Organization | WASCO, CITY OF |
| Phone | 541-442-5515 |
Population & Service
| Population Served | 460 |
| Service Connections | 215 |
Drinking Water Violations (164)
This water system has 164 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 22, 2025 | — | Other | No | No | — | — | — | Resolved | Nov 7, 2025 | — | |
| Oct 22, 2025 | — | Other | No | No | — | — | — | Resolved | Nov 7, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MCL | Yes | No | — | — | — | Archived | Oct 31, 2025 | — | |
| Oct 1, 2025 | Oct 31, 2025 | MCL | Yes | No | — | — | — | Archived | Oct 31, 2025 | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Aug 22, 2025 | — | |
| Jan 1, 2025 | Jan 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2025 | — | |
| Jan 1, 2025 | Jan 31, 2025 | MON | No | Yes | — | — | — | Resolved | Jan 31, 2025 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Dec 1, 2014 | Dec 31, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2014 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Nov 1, 2014 | Nov 30, 2014 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | — | |
| Nov 1, 2012 | Nov 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | — | |
| Nov 1, 2012 | Nov 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | — | |
| Nov 1, 2012 | Nov 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | — | |
| Nov 1, 2012 | Nov 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 2012 | — | |
| Jun 1, 2011 | Jun 30, 2011 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2011 | — | |
| Jun 1, 2011 | Jun 30, 2011 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2011 | — | |
| Jun 1, 2011 | Jun 30, 2011 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2011 | — | |
| Jun 1, 2011 | Jun 30, 2011 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Jan 1, 2011 | Dec 31, 2013 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | — | 1 mg/L | — | Resolved | Dec 31, 2011 | — | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2010 | — | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2010 | — | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2010 | — | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2010 | — | |
| May 1, 2008 | May 31, 2008 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2008 | — |
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.