CORVALLIS, OR · Benton County
RIDGEWOOD DIST IMPROV CO Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
- OR4100229
- System type
- Community Water System
- Population served
- 90
- Service connections
- 40
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-basedRevised Total Coliform Rule
March 1, 2025 – March 31, 2025
ResolvedMonitoring, Repeat Major (TCR)
—Coliform (TCR)
January 1, 2007 – January 31, 2007
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
January 1, 2007 – January 31, 2007
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
January 1, 2007 – January 31, 2007
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
December 1, 2006 – December 31, 2006
ResolvedMonitoring, Repeat Minor (TCR)
—Coliform (TCR)
November 1, 2006 – November 30, 2006
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
November 1, 2006 – November 30, 2006
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
October 1, 2006 – October 31, 2006
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
June 1, 1999 – June 30, 1999
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
April 1, 1997 – April 30, 1997
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 1995 – September 30, 1995
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
February 1, 1993 – February 28, 1993
ResolvedMaximum Contaminant Level Violation, Monthly (TCR)
Health-basedColiform (TCR)
January 1, 1993 – January 31, 1993
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
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| March 1, 2025 – March 31, 2025 | Maximum Contaminant Level Violation, E. coli (RTCR) | Revised Total Coliform Rule | Health-based | Resolved |
| January 1, 2007 – January 31, 2007 | Monitoring, Repeat Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2007 – January 31, 2007 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2007 – January 31, 2007 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| December 1, 2006 – December 31, 2006 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| November 1, 2006 – November 30, 2006 | Monitoring, Repeat Minor (TCR) | Coliform (TCR) | — | Resolved |
| November 1, 2006 – November 30, 2006 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| October 1, 2006 – October 31, 2006 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | Resolved |
| June 1, 1999 – June 30, 1999 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 1997 – April 30, 1997 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 1, 1995 – September 30, 1995 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| February 1, 1993 – February 28, 1993 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 1993 – January 31, 1993 | Maximum Contaminant Level Violation, Monthly (TCR) | Coliform (TCR) | Health-based | 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 |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- March 6, 2025State Public Notification received3 linked violations
- August 9, 2007State Compliance achieved21 linked violations
- May 13, 2002State Compliance achieved1 linked violation
- October 19, 2000State Compliance achieved1 linked violation
- October 8, 1999State Public Notification received3 linked violations
- November 10, 1998State Public Notification received1 linked violation
- October 9, 1998State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
Contact
RIDGEWOOD DIST IMPROV CO
541-602-5552
CORVALLIS, OR 97330