Water Quality Programs

Between 1999 and 2005, each public water system in Oregon received a source water assessment report completed by the Oregon Department of Environmental Quality and Oregon Health Authority drinking water programs. The assessment gives the water system and community information on the watershed or recharge area that supplies the well, spring or intake (the “drinking water source area”) and identifies potential risks within the source area.
  • Summary of Oregon's Source Water Assessment Methodology for 1999 – 2005 reports (coming soon)
​Source Water Assessment Inventory Results as of June 2005 for Potential Contaminant Sources identified in Oregon Drinking Water Source Areas for Community and Non-transient Non-community Public Water Systems

In 2016 and 2017, the agencies are completing Updated Source Water Assessments to provide the water systems and communities more detailed information on the watershed or recharge area that supplies their well, spring or intake. DEQ opened public comment on the content and format of an USWA prototype on May 18, 2016.  This public comment period allowed partner state agencies, stakeholders, and public water providers an opportunity to help make the information more useful and relevant.  Comments received were used to improve the document.  The prototype was finalized in August 2016.

Updated Source Water Assessments will be provided to all public water systems using surface water.  For groundwater systems, OHA has prioritized new Community and Non-Transient Non-Community water systems and systems that have added a new water source since their original source water assessment was completed. 
Public water systems and local communities can use the information in the assessments to voluntarily develop place-based plans and implement drinking water protection strategies. 

Source Water Assessment results (2000-2005)

Updated Source Water Assessments (2016-2017)