Is MARICOPA MOUNTAIN DWID 1 required to publish a Consumer Confidence Report?

Yes. MARICOPA MOUNTAIN DWID 1 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 MARICOPA MOUNTAIN DWID 1’s next Consumer Confidence Report due?

MARICOPA MOUNTAIN DWID 1’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

MARICOPA, AZ · Pinal County

MARICOPA MOUNTAIN DWID 1 Water System

Consumer Confidence Report status

MARICOPA MOUNTAIN DWID 1 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 MARICOPA MOUNTAIN DWID 1.

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): AZ0411087
System type: Community Water System
Population served: 450
Service connections: 3
Ownership: privately owned
Water source: groundwater (wells)

MARICOPA MOUNTAIN DWID 1 is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 450 people from groundwater.

As of August 1, 2026, its federal record holds 24 entries between 1985 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 24, 19 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 inorganic chemicals, the Stage 1 Disinfectants and Disinfection Byproducts Rule, and the Total Coliform Rules.

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
July 24, 2022 – July 9, 2022
Resolved
Monitoring, Regular
—
Fluoride
January 1, 2015 – December 31, 2017
Resolved
Monitoring, Regular
—
CYANIDE
January 1, 2015 – December 31, 2017
Resolved
Monitoring, Regular
—
Cadmium
January 1, 2015 – December 31, 2017
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2015 – March 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2010 – December 31, 2010
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2009 – December 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
October 1, 2007 – December 31, 2007
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
December 1, 2006 – December 31, 2006
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
November 1, 2005 – November 30, 2005
Resolved
Monitoring, Regular
—
Chromium
March 31, 1988 – March 30, 1991
Resolved
Monitoring, Regular
—
Cadmium
March 31, 1988 – March 30, 1991
Resolved
Monitoring, Regular
—
Nitrate
March 31, 1988 – March 30, 1991
Resolved
Monitoring, Regular
—
Mercury
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Chromium
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Barium
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Fluoride
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Selenium
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1988 – March 31, 1988
Resolved
Monitoring, Regular
—
Arsenic
March 5, 1985 – March 3, 1988
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 24, 2022 – July 9, 2022	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 2015 – December 31, 2017	Monitoring, Regular	Fluoride	—	Resolved
January 1, 2015 – December 31, 2017	Monitoring, Regular	CYANIDE	—	Resolved
January 1, 2015 – December 31, 2017	Monitoring, Regular	Cadmium	—	Resolved
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2009 – December 31, 2009	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
July 1, 2009 – September 30, 2009	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
October 1, 2007 – December 31, 2007	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
December 1, 2006 – December 31, 2006	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 2005 – November 30, 2005	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
March 31, 1988 – March 30, 1991	Monitoring, Regular	Chromium	—	Resolved
March 31, 1988 – March 30, 1991	Monitoring, Regular	Cadmium	—	Resolved
March 31, 1988 – March 30, 1991	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Mercury	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Chromium	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Barium	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Fluoride	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Selenium	—	Resolved
January 1, 1988 – March 31, 1988	Monitoring, Regular	Nitrate	—	Resolved
March 5, 1985 – March 3, 1988	Monitoring, Regular	Arsenic	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

January 9, 2017State Administrative/Compliance Order without penalty issued230 linked violations

Common questions

Is MARICOPA MOUNTAIN DWID 1 required to publish a Consumer Confidence Report?: Yes. MARICOPA MOUNTAIN DWID 1 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 MARICOPA MOUNTAIN DWID 1’s next Consumer Confidence Report due?: MARICOPA MOUNTAIN DWID 1’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MARICOPA MOUNTAIN DWID 1 have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for MARICOPA MOUNTAIN DWID 1.
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

CRISWELL, NANCY A

520-424-9646

MARICOPA, AZ 85139