WEST SLOPE WATER DISTRICT
Oregon — Community Water System — PWSID: OR4100660
System Information
| PWSID | OR4100660 |
| System Name | WEST SLOPE WATER DISTRICT |
| 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 | Mar 12, 1979 |
| Last Reported | Dec 23, 2025 |
Location & Contact
| State | Oregon |
| City | PORTLAND |
| ZIP Code | 97298 |
| Address | PO BOX 25140 |
| Organization | WEST SLOPE WATER DISTRICT |
| Phone | 503-292-2777 |
Population & Service
| Population Served | 11,000 |
| Service Connections | 3,234 |
Drinking Water Violations (30)
This water system has 30 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, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Jun 28, 2024 | Consumer Confidence Rule |
| Mar 11, 2018 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 21, 2018 | Lead and Copper Rule |
| Mar 1, 2018 | Mar 31, 2018 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Mar 31, 2018 | Revised Total Coliform Rule |
| Sep 1, 2017 | Sep 30, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Sep 30, 2017 | Revised Total Coliform Rule |
| Aug 1, 2017 | Aug 31, 2017 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Aug 31, 2017 | Revised Total Coliform Rule |
| Sep 1, 2013 | Sep 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | Total Coliform Rule |
| Aug 1, 2013 | Aug 31, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2013 | Total Coliform Rule |
| Apr 1, 2013 | Apr 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2013 | Total Coliform Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2011 | Oct 31, 2011 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2011 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Oct 1, 2010 | Oct 31, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2010 | Total Coliform Rule |
| Apr 1, 2008 | Apr 30, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2008 | Total Coliform Rule |
| Sep 1, 2007 | Sep 30, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2007 | Total Coliform Rule |
| Nov 1, 2006 | Nov 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2006 | Total Coliform Rule |
| Apr 1, 2006 | Apr 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2006 | Total Coliform Rule |
| Mar 1, 2004 | Mar 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2004 | Total Coliform Rule |
| Nov 1, 2003 | Nov 30, 2003 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2003 | Total Coliform Rule |
| Sep 1, 2001 | Sep 30, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2001 | Total Coliform Rule |
| Sep 1, 1996 | Sep 30, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1996 | Total Coliform Rule |
| Nov 1, 1995 | Nov 30, 1995 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Nov 30, 1995 | Total Coliform Rule |
| Sep 1, 1995 | Sep 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1995 | Total Coliform Rule |
| Oct 1, 1994 | Oct 31, 1994 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 1994 | Total Coliform Rule |
| Sep 1, 1994 | Sep 30, 1994 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 1994 | Total Coliform Rule |
| — | — | — | 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.