EL MIRAGE, AZ · Maricopa County

EPCOR - CHAPARRAL CITY 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 Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.

System facts

System ID (PWSID): AZ0407017
System type: Community Water System
Population served: 26,026
Service connections: 13,438
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring, Source Water (LT2)
—
Cryptosporidium
April 1, 2018 – April 30, 2018
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2018 – December 31, 2018
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2011 – June 30, 2011
Resolved
Monitoring, Regular
—
Selenium
January 1, 2009 – December 31, 2011
Resolved
Monitoring, Regular
—
Mercury
January 1, 2009 – December 31, 2011
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2009 – December 31, 2011
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2009 – December 31, 2011
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
October 1, 2008 – October 31, 2008
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
July 1, 2008 – July 31, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Selenium
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2008 – December 31, 2008
Resolved
Monitoring, Regular
—
Chromium
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Selenium
January 1, 2007 – December 31, 2007
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2007 – March 31, 2007
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2007 – December 31, 2007
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Styrene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Heptachlor epoxide
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Benzene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Styrene
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Nickel
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
Chromium
January 1, 2006 – December 31, 2006
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Benzene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
LASSO
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Heptachlor
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Di(2-ethylhexyl) phthalate
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Dalapon
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
ETHYLENE DIBROMIDE
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
2,4-D
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
2,3,7,8-TCDD
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Atrazine
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Diquat
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Picloram
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Endrin
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Picloram
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
2,4,5-TP
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Methoxychlor
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Diquat
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Glyphosate
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Simazine
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Picloram
January 1, 2006 – December 31, 2008
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Barium
January 1, 2005 – December 31, 2005
Resolved
Monitoring, Regular
—
Radium-226
January 1, 2004 – December 31, 2007
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2004 – December 31, 2007
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2004 – December 31, 2007
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2004 – December 31, 2007
Resolved
Monitoring, Regular
—
Radium-226
January 1, 2004 – December 31, 2007
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
March 26, 1981 – April 25, 1981
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
March 26, 1981 – April 25, 1981
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
May 15, 1980 – September 14, 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
April 1, 2018 – April 30, 2018	Monitoring, Source Water (LT2)	Cryptosporidium	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Fluoride	—	Resolved
June 1, 2011 – June 30, 2011	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2009 – December 31, 2011	Monitoring, Regular	Selenium	—	Resolved
January 1, 2009 – December 31, 2011	Monitoring, Regular	Mercury	—	Resolved
January 1, 2009 – December 31, 2011	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2009 – December 31, 2011	Monitoring, Regular	Thallium, Total	—	Resolved
October 1, 2008 – October 31, 2008	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2008 – July 31, 2008	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Selenium	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2008 – December 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Chromium	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Selenium	—	Resolved
January 1, 2007 – March 31, 2007	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 2007 – December 31, 2007	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Styrene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Heptachlor epoxide	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Benzene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Styrene	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Nickel	—	Resolved
January 1, 2006 – December 31, 2006	Monitoring, Regular	Chromium	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Benzene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	LASSO	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Heptachlor	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Di(2-ethylhexyl) phthalate	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Dalapon	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	1,2-DIBROMO-3-CHLOROPROPANE	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	ETHYLENE DIBROMIDE	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	2,4-D	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	2,3,7,8-TCDD	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Atrazine	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Diquat	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Picloram	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Endrin	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Picloram	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	2,4,5-TP	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Methoxychlor	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Diquat	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Glyphosate	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Simazine	—	Resolved
January 1, 2006 – December 31, 2008	Monitoring, Regular	Picloram	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 2005 – December 31, 2005	Monitoring, Regular	Barium	—	Resolved
January 1, 2004 – December 31, 2007	Monitoring, Regular	Radium-226	—	Resolved
January 1, 2004 – December 31, 2007	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2004 – December 31, 2007	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
January 1, 2004 – December 31, 2007	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2004 – December 31, 2007	Monitoring, Regular	Radium-226	—	Resolved
March 26, 1981 – April 25, 1981	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
March 26, 1981 – April 25, 1981	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
May 15, 1980 – September 14, 1980	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived

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

Enforcement actions

June 22, 2009State Violation/Reminder Notice56 linked violations
May 11, 2009State no longer subject to Rule80 linked violations
April 28, 2009State no longer subject to Rule48 linked violations
March 19, 2009State no longer subject to Rule57 linked violations
March 2, 2009State Compliance achieved145 linked violations
February 23, 2009State Compliance achieved153 linked violations
October 20, 2008State Compliance achieved79 linked violations
September 29, 2008State Compliance achieved73 linked violations
August 27, 2008State Compliance achieved30 linked violations

Contact

DIDOMIZIO, TOM

623-445-2431

EL MIRAGE, AZ 85335