PASADENA, NV · Churchill County

TOLAS WATERWORKS CO OP 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 Nevada’s official records. Always confirm current status with Nevada before making decisions based on this information.

System facts

System ID (PWSID): NV0000055
System type: Community Water System
Population served: 190
Service connections: 103
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2015 – June 30, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2015 – March 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2014 – December 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2014 – June 30, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2014 – March 31, 2014
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2013 – September 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2013 – June 30, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2013 – March 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2012 – June 30, 2012
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Arsenic
October 1, 2010 – December 31, 2010
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
October 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
July 1, 2010 – September 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2010 – September 30, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2010 – June 30, 2010
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
January 1, 2010 – March 31, 2010
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
January 1, 2009 – March 31, 2009
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
HEXACHLOROBENZENE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Chlordane
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Endrin
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Diquat
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Endothall
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Hexachlorocyclopentadiene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Benzo(a)pyrene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Total Polychlorinated Biphenyls (PCB)
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2008 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Uranium
January 1, 2008 – March 31, 2008
Resolved
Monitoring, Regular
—
Nitrite
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Benzene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Toluene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Styrene
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Endrin
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Simazine
January 1, 2008 – December 31, 2010
Resolved
Monitoring, Regular
—
Picloram
January 1, 2008 – December 31, 2010
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2007 – February 21, 2008
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2006 – December 31, 2006
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2005 – September 30, 2005
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
January 1, 2005 – March 31, 2005
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2000 – February 21, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Styrene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Toluene
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1999 – December 31, 2001
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1999 – December 31, 2001
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 2015 – June 30, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2014 – June 30, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2014 – March 31, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2013 – December 31, 2013	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2013 – September 30, 2013	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2013 – June 30, 2013	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2013 – March 31, 2013	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2012 – December 31, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2010 – December 31, 2010	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring, Regular	Arsenic	—	Resolved
October 1, 2010 – December 31, 2010	Monitoring, Regular	Combined Uranium	—	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
July 1, 2010 – September 30, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2010 – June 30, 2010	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
January 1, 2010 – December 31, 2010	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
January 1, 2009 – March 31, 2009	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	HEXACHLOROBENZENE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Chlordane	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Endrin	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Diquat	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Endothall	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Hexachlorocyclopentadiene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Benzo(a)pyrene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Total Polychlorinated Biphenyls (PCB)	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2008 – March 31, 2008	Maximum Contaminant Level Violation, Average	Combined Uranium	Health-based	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Nitrite	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Benzene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Toluene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Styrene	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Endrin	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Simazine	—	Resolved
January 1, 2008 – December 31, 2010	Monitoring, Regular	Picloram	—	Resolved
July 1, 2007 – February 21, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nitrate	—	Resolved
July 1, 2005 – September 30, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
January 1, 2005 – March 31, 2005	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2000 – February 21, 2008	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Styrene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Toluene	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1999 – December 31, 2001	Monitoring, Regular	Xylenes, Total	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

September 9, 2015State Compliance achieved14 linked violations
August 10, 2015State Public Notification requested1 linked violation
August 10, 2015State Violation/Reminder Notice1 linked violation
May 7, 2015State Violation/Reminder Notice1 linked violation
May 7, 2015State Public Notification requested1 linked violation
February 11, 2015State Public Notification requested1 linked violation
February 11, 2015State Violation/Reminder Notice1 linked violation
December 18, 2014State Administrative/Compliance Order with penalty issued3 linked violations
November 24, 2014State Public Notification requested1 linked violation
November 24, 2014State Violation/Reminder Notice1 linked violation
July 24, 2014State Public Notification requested1 linked violation
July 24, 2014State Violation/Reminder Notice1 linked violation
May 20, 2014State Violation/Reminder Notice1 linked violation
May 20, 2014State Public Notification requested1 linked violation
March 28, 2014State Administrative/Compliance Order without penalty issued11 linked violations
February 13, 2014State Public Notification requested1 linked violation
February 13, 2014State Violation/Reminder Notice1 linked violation
November 5, 2013State Public Notification requested1 linked violation
November 5, 2013State Violation/Reminder Notice1 linked violation
August 12, 2013State Violation/Reminder Notice1 linked violation
August 12, 2013State Public Notification requested1 linked violation
June 28, 2013State Public Notification received1 linked violation
April 30, 2013State Public Notification requested1 linked violation
April 30, 2013State Violation/Reminder Notice1 linked violation
April 18, 2013State Public Notification received1 linked violation
February 11, 2013State Public Notification requested1 linked violation
February 11, 2013State Violation/Reminder Notice1 linked violation
January 15, 2013State Public Notification received1 linked violation
June 29, 2012State Public Notification requested1 linked violation
June 29, 2012State Violation/Reminder Notice1 linked violation
April 24, 2012State Public Notification requested1 linked violation
April 24, 2012State Violation/Reminder Notice1 linked violation
October 1, 2011State Compliance achieved135 linked violations
September 27, 2011State Compliance achieved1 linked violation
June 10, 2011State Public Notification requested1 linked violation
June 10, 2011State Violation/Reminder Notice1 linked violation
May 24, 2011State Compliance achieved25 linked violations
March 31, 2011State Violation/Reminder Notice29 linked violations
March 31, 2011State Public Notification requested29 linked violations
March 31, 2011State Public Notification requested29 linked violations
March 31, 2011State Violation/Reminder Notice29 linked violations
March 26, 2011State Public Notification requested21 linked violations
March 26, 2011State Violation/Reminder Notice21 linked violations
March 22, 2011State Public Notification requested1 linked violation
March 22, 2011State Violation/Reminder Notice1 linked violation
March 22, 2011State Violation/Reminder Notice1 linked violation
March 22, 2011State Public Notification requested1 linked violation
March 22, 2011State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
March 22, 2011State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 22, 2011State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
March 22, 2011State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 22, 2011State Public Notification requested1 linked violation
March 22, 2011State Violation/Reminder Notice1 linked violation
March 2, 2011State Public Notification requested1 linked violation
March 2, 2011State Violation/Reminder Notice1 linked violation
March 2, 2011State Public Notification requested1 linked violation
March 2, 2011State Violation/Reminder Notice1 linked violation
March 2, 2011State Public Notification requested1 linked violation
March 2, 2011State Violation/Reminder Notice1 linked violation
February 21, 2011State Public Notification received2 linked violations
May 3, 2010State Public Notification received2 linked violations
September 8, 2009State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
August 10, 2009State Administrative/Compliance Order without penalty issued24 linked violations
August 7, 2008State Public Notification received3 linked violations
February 21, 2008State Compliance achieved8 linked violations
October 16, 2007State Violation/Reminder Notice4 linked violations
October 1, 2007State Public Notification received1 linked violation
May 1, 2007State Compliance achieved2 linked violations
December 20, 2006State Public Notification received1 linked violation
April 18, 2006State Public Notification requested6 linked violations
April 18, 2006State Violation/Reminder Notice1 linked violation
September 28, 2004State Violation/Reminder Notice6 linked violations
October 1, 2002State Violation/Reminder Notice12 linked violations
August 4, 2001State Violation/Reminder Notice9 linked violations

Contact

HOPF, DAVE

626-688-1601

PASADENA, CA 91107