WASCO, OR · Sherman County

WASCO, CITY OF 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): OR4100935
System type: Community Water System
Population served: 460
Service connections: 215
Ownership: local government
Water source: groundwater (wells)

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
October 22, 2025 – November 7, 2025
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
October 1, 2025 – October 31, 2025
Archived
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2025 – August 22, 2025
Resolved
Monitoring, Routine (RTCR)
—
Revised Total Coliform Rule
January 1, 2025 – January 31, 2025
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
December 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2014 – November 30, 2014
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2012 – November 30, 2012
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Toluene
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Styrene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Benzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2011 – December 31, 2013
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2011 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 2010 – August 31, 2010
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Di(2-ethylhexyl) phthalate
January 1, 2005 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Arsenic
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Diquat
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Simazine
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Picloram
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
LASSO
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Endrin
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2002 – December 31, 2004
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2000 – December 31, 2000
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1998 – September 30, 1998
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 1997 – September 30, 1997
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 1996 – October 31, 1996
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1994 – April 30, 1994
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 1993 – July 31, 1993
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
June 1, 1976 – May 31, 1980
Archived
Monitoring, 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
October 22, 2025 – November 7, 2025	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2025 – October 31, 2025	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Archived
July 1, 2025 – August 22, 2025	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2025 – January 31, 2025	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	—	Resolved
December 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2014 – November 30, 2014	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 2012 – November 30, 2012	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Toluene	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Styrene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Benzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2011 – December 31, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
August 1, 2010 – August 31, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2005 – December 31, 2007	Maximum Contaminant Level Violation, Single Sample	Di(2-ethylhexyl) phthalate	Health-based	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Arsenic	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Diquat	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Simazine	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Picloram	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	LASSO	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Endrin	—	Resolved
January 1, 2002 – December 31, 2004	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2000 – December 31, 2000	Monitoring, Regular	Nitrate	—	Resolved
September 1, 1998 – September 30, 1998	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
September 1, 1997 – September 30, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 1996 – October 31, 1996	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 1994 – April 30, 1994	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1993 – July 31, 1993	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
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

November 7, 2025State Public Notification received1 linked violation
November 7, 2025State Compliance achieved1 linked violation
November 7, 2025State Compliance achieved1 linked violation
October 10, 2025State Public Notification requested1 linked violation
August 22, 2025State Compliance achieved1 linked violation
March 4, 2025State Compliance achieved1 linked violation
March 4, 2025State Compliance achieved1 linked violation
February 17, 2015State Compliance achieved1 linked violation
February 17, 2015State Compliance achieved1 linked violation
January 29, 2015State Public Notification requested1 linked violation
January 12, 2015State Public Notification received1 linked violation
December 30, 2014State Public Notification received1 linked violation
December 18, 2014State Public Notification requested1 linked violation
February 21, 2014State Compliance achieved20 linked violations
January 18, 2013State Compliance achieved1 linked violation
December 31, 2012State Violation/Reminder Notice1 linked violation
December 21, 2012State Public Notification requested1 linked violation
December 7, 2012State Public Notification received1 linked violation
March 27, 2012State Compliance achieved1 linked violation
March 27, 2012State Compliance achieved1 linked violation
February 28, 2012State Violation/Reminder Notice2 linked violations
August 1, 2011State Violation/Reminder Notice1 linked violation
July 27, 2011State Public Notification requested1 linked violation
July 18, 2011State Compliance achieved1 linked violation
July 5, 2011State Public Notification received1 linked violation
September 27, 2010State Violation/Reminder Notice1 linked violation
March 16, 2009State Compliance achieved30 linked violations
February 17, 2005State Compliance achieved1 linked violation
February 17, 2005State Compliance achieved1 linked violation
February 17, 2005State Compliance achieved21 linked violations
February 17, 2005State Compliance achieved29 linked violations
December 18, 2002State Compliance achieved3 linked violations
December 9, 1998State Public Notification received2 linked violations
November 3, 1998State Public Notification received1 linked violation
October 7, 1998State Public Notification received1 linked violation
July 1, 1998State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 5, 1998State Public Notification received1 linked violation
November 18, 1997State Public Notification received2 linked violations

Contact

WASCO, CITY OF

541-442-5515

WASCO, OR 97065