OREGON CITY, OR · Columbia County
OREGON CITY-MIXTURE Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of December 1, 1984. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Columbia County, OR.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.
System facts
- System ID (PWSID)
- OR4101039
- System type
- Community Water System
- Population served
- 6,000
- Service connections
- 2,500
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
OREGON CITY-MIXTURE is one of 63 community water systems in Oregon in the 3,301 to 10,000 people size category, formerly serving 6,000 people from surface water.
EPA's federal records list this system as inactive in 1984; the record below is historical.
As of August 1, 2026, its federal record holds 9 entries between 1976 and 1979, all of which EPA lists as closed. Nothing has been added since 1979.
All 9 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals and the Radionuclides and Revised Rad Rule.
Violation history
Monitoring, Regular
—Selenium
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Mercury
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Nitrate
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Arsenic
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Cadmium
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Chromium
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Fluoride
June 24, 1979 – June 23, 1980
ArchivedMonitoring, Regular
—Combined Radium (-226 and -228)
June 1, 1976 – May 31, 1980
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 1, 1976 – May 31, 1980
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Selenium | — | Archived |
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Mercury | — | Archived |
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Nitrate | — | Archived |
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Arsenic | — | Archived |
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Cadmium | — | Archived |
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Chromium | — | Archived |
| June 24, 1979 – June 23, 1980 | Monitoring, Regular | Fluoride | — | Archived |
| June 1, 1976 – May 31, 1980 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
| June 1, 1976 – May 31, 1980 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Last known contact on file (system is inactive)
Not on record
503-655-8481
OREGON CITY, OR 97045