THE DALLES, OR · Wasco County

ROWENA DELL WATER SYSTEM 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): OR4105372
System type: Community Water System
Population served: 30
Service connections: 19
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
October 1, 2025 – October 31, 2025
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – September 3, 2025
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2017 – December 31, 2017
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2013 – May 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 2013 – April 30, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 2012 – August 31, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2012 – June 30, 2012
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
May 25, 2012 – January 2, 2013
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
April 1, 2012 – April 30, 2012
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 24, 2011 – January 2, 2013
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 2011 – November 30, 2011
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2011 – October 31, 2011
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
August 1, 2011 – August 31, 2011
Resolved
Monitoring, Regular
—
Glyphosate
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Xylenes, Total
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Ethylbenzene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Styrene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Toxaphene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Dalapon
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Simazine
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Picloram
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Carbofuran
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Heptachlor epoxide
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Chlordane
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
LASSO
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
LASSO
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Carbofuran
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Picloram
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Endothall
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Toxaphene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Chlordane
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Toluene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
Pentachlorophenol
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2009 – September 30, 2009
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2002 – December 31, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 2002 – September 30, 2002
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 2001 – March 31, 2001
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 2000 – September 30, 2000
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1998 – June 30, 1998
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 1997 – September 30, 1997
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
July 1, 1997 – September 30, 1997
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1996 – March 31, 1996
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1993 – September 30, 1993
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
October 1, 1992 – December 31, 1992
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
July 1, 1992 – September 30, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1992 – June 30, 1992
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2025 – October 31, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
July 1, 2025 – September 3, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2017 – December 31, 2017	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
May 1, 2013 – May 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2013 – April 30, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 2012 – August 31, 2012	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 25, 2012 – January 2, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 1, 2012 – April 30, 2012	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
November 24, 2011 – January 2, 2013	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 1, 2011 – November 30, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 2011 – October 31, 2011	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
August 1, 2011 – August 31, 2011	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Glyphosate	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Xylenes, Total	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Styrene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Toxaphene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Dalapon	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Simazine	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Picloram	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Carbofuran	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Heptachlor epoxide	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	Chlordane	—	Resolved
October 1, 2009 – December 31, 2009	Monitoring, Regular	LASSO	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	LASSO	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Carbofuran	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Picloram	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Endothall	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Toxaphene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Chlordane	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Toluene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Heptachlor epoxide	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
October 1, 2002 – December 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 2002 – September 30, 2002	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
March 1, 2001 – March 31, 2001	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 2000 – September 30, 2000	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
June 1, 1998 – June 30, 1998	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1997 – September 30, 1997	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1997 – September 30, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 1996 – March 31, 1996	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1993 – September 30, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1993 – March 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 1992 – December 31, 1992	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1992 – September 30, 1992	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1992 – June 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Contact

ROWENA DELL WATER SYSTEM

541-478-3754

THE DALLES, OR 97058