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.

If you don't know the water system ID number or are unsure, use the WS Name Look Up feature to find the system.
If you know the water system's ID number, use the WS ID Look Up feature to find the system.

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 all water system sampling, inventory, and compliance errors please phone Chuck Michael, DWS Compliance Officer, at 971-673-0420.

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

Inventory List for all Oregon Drinking Water Systems in Excel or printable screen format
Tools for Laboratories