SISTERS, OR · Deschutes County

SISTERS, 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): OR4100826
System type: Community Water System
Population served: 3,778
Service connections: 2,200
Ownership: local government
Water source: groundwater (wells)

Violation history

Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 2015 – August 31, 2015
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
March 1, 2013 – March 31, 2013
Resolved
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Benzene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Toluene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Styrene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Diquat
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Endothall
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
LASSO
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
2,4-D
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Endrin
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
BHC-GAMMA
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Diquat
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Endothall
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Glyphosate
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) adipate
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Simazine
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Picloram
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Dinoseb
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Carbofuran
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Atrazine
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
LASSO
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Heptachlor
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Heptachlor epoxide
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
2,4,5-TP
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
July 1, 2008 – September 30, 2008
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2005 – December 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2005 – December 31, 2007
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 1995 – September 30, 1995
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 1995 – August 31, 1995
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 1995 – July 31, 1995
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
April 1, 1995 – April 30, 1995
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
March 1, 1995 – March 31, 1995
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
February 1, 1995 – February 28, 1995
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
October 1, 1994 – October 31, 1994
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
September 1, 1994 – September 30, 1994
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
August 1, 1994 – August 31, 1994
Resolved
Monitoring of Treatment (SWTR-Filter)
—
Surface Water Treatment Rule
July 1, 1994 – July 31, 1994
Resolved
Monitoring, Regular
—
Cadmium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Chromium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Fluoride
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Nitrate
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Selenium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Mercury
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Arsenic
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Barium
June 24, 1979 – June 23, 1980
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 1, 1976 – May 31, 1980
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
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
August 1, 2015 – August 31, 2015	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
March 1, 2013 – March 31, 2013	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2012 – December 31, 2012	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Benzene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Toluene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Styrene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Diquat	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Endothall	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	LASSO	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2009 – March 31, 2009	Monitoring, Regular	Pentachlorophenol	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	2,4-D	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Endrin	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	BHC-GAMMA	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Diquat	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Endothall	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Glyphosate	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Di(2-ethylhexyl) adipate	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Simazine	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Picloram	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Dinoseb	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Carbofuran	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Atrazine	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	LASSO	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Heptachlor	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Heptachlor epoxide	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	2,4,5-TP	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2005 – December 31, 2007	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
September 1, 1995 – September 30, 1995	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
August 1, 1995 – August 31, 1995	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 1995 – July 31, 1995	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
April 1, 1995 – April 30, 1995	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
March 1, 1995 – March 31, 1995	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
February 1, 1995 – February 28, 1995	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
October 1, 1994 – October 31, 1994	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
September 1, 1994 – September 30, 1994	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
August 1, 1994 – August 31, 1994	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
July 1, 1994 – July 31, 1994	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	—	Resolved
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 24, 1979 – June 23, 1980	Monitoring, Regular	Nitrate	—	Archived
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	Arsenic	—	Archived
June 24, 1979 – June 23, 1980	Monitoring, Regular	Barium	—	Archived
June 1, 1976 – May 31, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
June 1, 1976 – May 31, 1980	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

September 11, 2015State Compliance achieved3 linked violations
May 13, 2009State Compliance achieved942 linked violations
November 12, 1996State Compliance achievedgeneral compliance action — not tied to a specific violation on record

Contact

SISTERS, CITY OF

541-323-5212

SISTERS, OR 97759