DELPHIAN SCHOOL
Oregon - Community Water System - PWSID: OR4100812
System Information
| PWSID | OR4100812 |
| System Name | DELPHIAN SCHOOL |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Mixed |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 12, 1979 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | SHERIDAN |
| ZIP Code | 97378 |
| Address | 20950 SW ROCK CREEK RD |
| Organization | DELPHIAN SCHOOL |
| Phone | 503-843-3521 |
Population & Service
| Population Served | 350 |
| Service Connections | 3 |
Drinking Water Violations (25)
This water system has 25 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 29, 2025 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Jul 29, 2025 | - | |
| Dec 1, 2022 | Dec 31, 2022 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2022 | - | |
| Sep 26, 2017 | - | MR | No | Yes | - | - | - | Resolved | Oct 13, 2017 | - | |
| Oct 1, 2014 | Sep 30, 2015 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Sep 30, 2015 | - | |
| Oct 1, 2014 | Sep 30, 2015 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Sep 30, 2015 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jan 31, 2009 | - | |
| Jan 1, 2009 | Jan 31, 2009 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jan 31, 2009 | - | |
| Nov 1, 2008 | Nov 30, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2008 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Oct 1, 2001 | Oct 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2001 | - | |
| 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, 1998 | Dec 31, 1998 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1996 | Dec 31, 1999 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1999 | - | |
| Jul 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 1995 | - | |
| Jul 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Feb 7, 1995 | - | |
| Jan 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Dec 5, 1994 | - | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | - | 15 pCi/L | - | Archived | May 31, 1980 | - | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | - | 5 pCi/L | - | Archived | May 31, 1980 | - | |
| - | - | - | 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.