Public Water Partners

SUN LAKES, AZ · Pinal County

LAGO DEL ORO WATER COMPANY Water System

Consumer Confidence Report status

LAGO DEL ORO WATER COMPANY must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for LAGO DEL ORO WATER COMPANY.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
AZ0411117
System type
Community Water System
Population served
18,132
Service connections
6,915
Ownership
privately owned
Water source
groundwater (wells)

LAGO DEL ORO WATER COMPANY is one of 67 community water systems in Arizona in the 10,001 to 100,000 people size category, serving 18,132 people from groundwater.

As of August 1, 2026, its federal record holds 148 entries between 2001 and 2025, all of which EPA lists as closed.

Of the 148, 142 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Radionuclides and Revised Rad Rule, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    July 1, 2025 – September 30, 2025

    Resolved

  • Monitoring, Regular

    —

    Radium-228

    July 1, 2025 – September 30, 2025

    Resolved

  • Monitoring, Regular

    —

    Radium-226

    July 1, 2025 – September 30, 2025

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    July 1, 2025 – September 30, 2025

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    January 1, 2022 – March 31, 2022

    Resolved

  • Report Sample Result/Fail Monitor (RTCR)

    —

    Revised Total Coliform Rule

    May 1, 2021 – June 29, 2021

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2016 – July 13, 2016

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2016 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    2,3,7,8-TCDD

    January 1, 2015 – December 31, 2017

    Resolved

  • Monitoring, Regular

    —

    2,3,7,8-TCDD

    January 1, 2015 – December 31, 2017

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    2,3,7,8-TCDD

    January 1, 2015 – December 31, 2017

    Resolved

  • Monitoring, Regular

    —

    2,3,7,8-TCDD

    January 1, 2015 – December 31, 2017

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2015 – December 31, 2015

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Vinyl chloride

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Toluene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2014 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    1,1,2-Trichloroethane

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring, Regular

    —

    Styrene

    January 1, 2013 – December 31, 2013

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    January 1, 2013 – March 31, 2013

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    October 1, 2012 – December 16, 2013

    Resolved

  • Monitoring, Regular

    —

    Radium-228

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    1,2,4-Trichlorobenzene

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    Radium-226

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2012 – December 31, 2012

    Resolved

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 2012 – December 31, 2012

    Resolved

  • Consumer Confidence Report Inadequate Reporting

    —

    Consumer Confidence Rule

    October 1, 2011 – December 16, 2013

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2011 – December 16, 2013

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2011 – December 31, 2011

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2011 – December 31, 2011

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Radium-228

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Radium-226

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Radium-226

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Combined Radium (-226 and -228)

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Radium-226

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Combined Uranium

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Combined Uranium

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Radium-228

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2009 – December 31, 2014

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2009 – December 31, 2009

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    January 1, 2009 – December 31, 2009

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2008 – August 13, 2008

    Resolved

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2007 – August 8, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    January 1, 2007 – March 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2007 – December 31, 2007

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    October 1, 2005 – December 31, 2005

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    January 1, 2005 – December 31, 2005

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    January 1, 2005 – March 31, 2005

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    January 1, 2004 – March 31, 2004

    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

    —

    Gross Alpha, Excl. Radon and U

    January 1, 2004 – December 31, 2007

    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 Uranium

    January 1, 2004 – December 31, 2007

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2003 – March 5, 2003

    Resolved

  • Monitoring, Regular

    —

    Atrazine

    January 1, 2003 – March 5, 2003

    Resolved

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2003 – March 5, 2003

    Resolved

  • Monitoring, Regular

    —

    Simazine

    January 1, 2003 – March 5, 2003

    Resolved

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Benzene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 2001 – December 31, 2001

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is LAGO DEL ORO WATER COMPANY required to publish a Consumer Confidence Report?

Yes. LAGO DEL ORO WATER COMPANY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is LAGO DEL ORO WATER COMPANY’s next Consumer Confidence Report due?

LAGO DEL ORO WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does LAGO DEL ORO WATER COMPANY have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for LAGO DEL ORO WATER COMPANY.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

LAGO DEL ORO WATER CO

520-825-3423

SUN LAKES, AZ 85248-7463