ALSEA COUNTY SERVICE DISTRICT
Oregon - Community Water System - PWSID: OR4100978
System Information
| PWSID | OR4100978 |
| System Name | ALSEA COUNTY SERVICE DISTRICT |
| 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 | CORVALLIS |
| ZIP Code | 97333 |
| Address | 360 SW AVERY |
| Organization | ALSEA COUNTY SERVICE DISTRICT |
| Phone | 541-766-6821 |
Population & Service
| Population Served | 202 |
| Service Connections | 83 |
Drinking Water Violations (40)
This water system has 40 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 | - | - | - | Unaddressed | - | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 17, 2023 | - | |
| Feb 1, 2023 | Feb 28, 2023 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2023 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Aug 1, 2007 | Aug 31, 2007 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2007 | - | |
| Jan 1, 2006 | Jan 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Jan 31, 2006 | - | |
| Oct 19, 2003 | - | Other | No | No | - | - | - | Resolved | Mar 1, 2004 | - | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | - | 0.004 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2001 | - | |
| Jan 1, 1999 | Dec 31, 2001 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2001 | - | |
| Aug 1, 1998 | Aug 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Aug 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 | - | |
| Jul 1, 1996 | Jul 31, 1996 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 1996 | - | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1996 | - | |
| Sep 1, 1995 | Sep 30, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1995 | - | |
| Aug 1, 1995 | Aug 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 1995 | - | |
| Aug 1, 1995 | Aug 31, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1995 | - | |
| Aug 1, 1995 | Aug 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 1995 | - | |
| Jul 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Oct 27, 1994 | - | |
| Apr 1, 1994 | Apr 30, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1994 | - | |
| Jul 1, 1992 | Jul 31, 1992 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 1992 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 2 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 0.005 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 10 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 0.1 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 0.010 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 0.002 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 4.0 mg/L | - | Archived | Jun 23, 1980 | - | |
| Jun 24, 1979 | Jun 23, 1980 | MR | No | No | - | 0.05 mg/L | - | Archived | Jun 23, 1980 | - | |
| 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 | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.