OPRD UNITY LAKE STATE PARK
Oregon — Transient Non-Community — PWSID: OR4191004
System Information
| PWSID | OR4191004 |
| System Name | OPRD UNITY LAKE STATE PARK |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 10, 1980 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | MT. VERNON |
| ZIP Code | 97865 |
| Address | PO BOX 10 |
| Organization | OPRD UNITY LAKE STATE PARK |
| Phone | 541-620-4540 |
Population & Service
| Population Served | 25 |
| Service Connections | 2 |
Drinking Water Violations (49)
This water system has 49 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 1, 2025 | Oct 31, 2025 | MON | No | Yes | — | — | — | Archived | Oct 31, 2025 | — | |
| May 1, 2025 | May 31, 2025 | MON | No | Yes | — | — | — | Resolved | May 31, 2025 | — | |
| Apr 1, 2025 | Apr 30, 2025 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2025 | — | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | — | 10 mg/L | — | Archived | Dec 31, 2025 | — | |
| May 1, 2023 | May 31, 2023 | MON | No | Yes | — | — | — | Resolved | May 31, 2023 | — | |
| Dec 23, 2013 | — | Other | No | No | — | — | — | Resolved | Apr 1, 2014 | — | |
| Nov 11, 2013 | — | Other | No | No | — | — | — | Resolved | Apr 1, 2014 | — | |
| Nov 6, 2013 | — | MR | No | Yes | — | — | — | Resolved | Apr 1, 2014 | — | |
| Oct 1, 2013 | Oct 31, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2013 | — | |
| Oct 1, 2013 | Oct 31, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | — | |
| Nov 25, 2012 | — | Other | No | No | — | — | — | Resolved | Jan 31, 2013 | — | |
| Nov 25, 2012 | — | Other | No | No | — | — | — | Resolved | Jan 31, 2013 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Jul 1, 2012 | Sep 30, 2012 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | — | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | — | |
| Oct 1, 2010 | Dec 31, 2010 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2009 | — | |
| Jul 1, 2009 | Sep 30, 2009 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2009 | Dec 31, 2009 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2009 | — | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2006 | — | |
| Jan 1, 2005 | Dec 31, 2005 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2005 | — | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2003 | — | |
| Jan 1, 2002 | Dec 31, 2002 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2002 | — | |
| Jan 1, 2002 | Dec 31, 2002 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2002 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2001 | Dec 31, 2001 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2001 | — | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2000 | — | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2000 | — | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1999 | — | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1999 | — | |
| Jan 1, 1998 | Dec 31, 1998 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1998 | — | |
| Jan 1, 1998 | Dec 31, 1998 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1998 | — | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1997 | — | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1997 | — | |
| Oct 1, 1996 | Dec 31, 1996 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1996 | — | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1996 | — | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1996 | — | |
| Jul 1, 1995 | Sep 30, 1995 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | — | |
| Apr 1, 1995 | Jun 30, 1995 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 1995 | — | |
| Apr 1, 1995 | Jun 30, 1995 | MCL | Yes | No | — | 5% of samples | — | Resolved | Jun 30, 1995 | — | |
| Jul 1, 1994 | Sep 30, 1994 | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1994 | — | |
| Apr 1, 1994 | Jun 30, 1994 | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 1994 | — | |
| — | — | — | 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.