CEDAR CITY, UT · Sanpete County

TWIN OAKS LOCAL DISTRICT 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 Utah’s official records. Always confirm current status with Utah before making decisions based on this information.

System facts

System ID (PWSID): UTAH20014
System type: Community Water System
Population served: 270
Service connections: 82
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Radium-228
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Radium-226
October 1, 2021 – December 31, 2021
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Radium-228
October 1, 2020 – December 31, 2020
Resolved
Monitoring, Regular
—
Radium-226
October 1, 2020 – December 31, 2020
Resolved
Sample Siting Plan Errors (RTCR)
—
Revised Total Coliform Rule
October 1, 2017 – December 22, 2017
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 2015 – October 31, 2015
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Vinyl chloride
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Carbon tetrachloride
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Styrene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Ethylbenzene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Toluene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Benzene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Tetrachloroethylene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Radium-228
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Trichloroethylene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Radium-226
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Xylenes, Total
April 1, 2013 – June 30, 2013
Resolved
Monitoring, Regular
—
Ethylbenzene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Xylenes, Total
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Carbon tetrachloride
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Trichloroethylene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Tetrachloroethylene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
CHLOROBENZENE
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Benzene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Toluene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Styrene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Radium-226
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Radium-228
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
October 1, 2011 – October 31, 2011
Archived
Monitoring, Regular
—
Radium-228
April 1, 2011 – May 26, 2011
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 2010 – November 30, 2010
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2010 – October 31, 2010
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2010 – September 30, 2010
Archived
Monitoring, Regular
—
Combined Uranium
April 1, 2010 – June 27, 2010
Resolved
Monitoring, Regular
—
Radium-228
April 1, 2010 – June 27, 2010
Resolved
Monitoring, Regular
—
Radium-226
April 1, 2010 – June 27, 2010
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
April 1, 2010 – June 27, 2010
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
April 1, 2010 – June 27, 2010
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Radium-228
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Radium-226
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
December 1, 1995 – December 31, 1995
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
April 1, 1994 – June 30, 1994
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 1, 2021 – December 31, 2021	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring, Regular	Radium-228	—	Resolved
October 1, 2021 – December 31, 2021	Monitoring, Regular	Radium-226	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring, Regular	Radium-228	—	Resolved
October 1, 2020 – December 31, 2020	Monitoring, Regular	Radium-226	—	Resolved
October 1, 2017 – December 22, 2017	Sample Siting Plan Errors (RTCR)	Revised Total Coliform Rule	—	Resolved
October 1, 2015 – October 31, 2015	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Vinyl chloride	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Styrene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Ethylbenzene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Toluene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Benzene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Tetrachloroethylene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Radium-228	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Trichloroethylene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Radium-226	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
April 1, 2013 – June 30, 2013	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Ethylbenzene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Xylenes, Total	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Vinyl chloride	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Trichloroethylene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Tetrachloroethylene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	CHLOROBENZENE	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Benzene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Toluene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Styrene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Radium-226	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Radium-228	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
October 1, 2011 – October 31, 2011	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
April 1, 2011 – May 26, 2011	Monitoring, Regular	Radium-228	—	Resolved
November 1, 2010 – November 30, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 2010 – October 31, 2010	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
September 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
April 1, 2010 – June 27, 2010	Monitoring, Regular	Combined Uranium	—	Resolved
April 1, 2010 – June 27, 2010	Monitoring, Regular	Radium-228	—	Resolved
April 1, 2010 – June 27, 2010	Monitoring, Regular	Radium-226	—	Resolved
April 1, 2010 – June 27, 2010	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
April 1, 2010 – June 27, 2010	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Radium-228	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Radium-226	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2010 – March 31, 2010	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
December 1, 1995 – December 31, 1995	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1994 – June 30, 1994	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

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

Enforcement actions

March 10, 2022State Compliance achieved6 linked violations
February 12, 2022State Public Notification requested5 linked violations
February 12, 2022State Formal Notice of Violation issued4 linked violations
February 6, 2021State Formal Notice of Violation issued4 linked violations
February 3, 2021State Compliance achieved9 linked violations
July 3, 2018State Compliance achieved21 linked violations
December 22, 2017State Compliance achieved2 linked violations
December 22, 2017State Formal Notice of Violation issued2 linked violations
December 11, 2015State Public Notification requested2 linked violations
November 11, 2013State Compliance achieved1 linked violation
November 11, 2013State Compliance achieved2 linked violations
November 11, 2013State Compliance achieved2 linked violations
August 15, 2013State Public Notification requested21 linked violations
August 9, 2013State Public Notification requested2 linked violations
August 9, 2013State Public Notification requested2 linked violations
August 9, 2013State Formal Notice of Violation issued1 linked violation
August 9, 2013State Public Notification requested1 linked violation
November 28, 2012State Compliance achieved22 linked violations
November 11, 2012State Compliance achieved2 linked violations
November 9, 2012State Public Notification requested22 linked violations
November 9, 2012State Public Notification requested2 linked violations
November 9, 2012State Formal Notice of Violation issued2 linked violations
November 9, 2012State Formal Notice of Violation issued2 linked violations
May 26, 2011State Compliance achieved3 linked violations
January 8, 2011State Public Notification requested3 linked violations
November 6, 2010State Public Notification requested3 linked violations
August 7, 2010State Public Notification requested8 linked violations
April 23, 2010State Formal Notice of Violation issued10 linked violations
April 23, 2010State Public Notification requested9 linked violations
July 27, 1994State Public Notification requested2 linked violations
January 31, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 31, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record

Contact

ASAY, DAVID

435-463-3555

CEDAR CITY, UT 84721