Welcome to Data Online, Oregon's Drinking Water Services data access site.

Here you can access a fair amount of data on public water systems in Oregon. You can find data such as coliform testing, chemical testing, contacts, violations, enforcements, public notices, and basic system information.

Use the Water System Search page to find a water system. You can enter the water system ID number if you know it, or you can search by water system name or location.

Data shown here is "live" data. That means it's as current as the reports we have in our system. This is the same data that Drinking Water Services (DWS) staff see and use. If something is missing, that usually means it has not been reported to us or we have not entered it yet. If you (water system personnel, county staff, lab staff, etc.) find a report is missing, please forward a copy to us at: DWS, PO BOX 14350, Portland, OR  97293.

For questions or updates regarding water system sampling, inventory, or compliance please contact Drinking Water Services at 971-673-0405 or Info.DrinkingWater@dhsoha.state.or.us.

Search Options is where you'll find the various queries to view data we currently have. The choices are explained there.

Information by county:
Inventory :: Surface Water Systems :: Water System Surveys :: Outstanding Performers :: Plan Reviews :: System Scores :: Exceedances
Alerts :: Violations :: Compliance & Enforcement :: Significant Deficiencies :: Cross Connection ASRs :: Treatment Plant Inspections :: Fluoride
Water Advisories :: Contact Reports :: Cyanotoxins :: PFAS :: Post-wildfire VOCs :: Public Notices

Inventory List for all Oregon Drinking Water Systems in Excel or printable screen format
Tools for Laboratories :: Staff/Partner Login