Is DUNCAN TOWN OF required to publish a Consumer Confidence Report?

Yes. DUNCAN TOWN OF 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 DUNCAN TOWN OF’s next Consumer Confidence Report due?

DUNCAN TOWN OF’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.

DUNCAN, AZ · Greenlee County

DUNCAN TOWN OF Water System

Consumer Confidence Report status

DUNCAN TOWN OF 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 DUNCAN TOWN OF.

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): AZ0406001
System type: Community Water System
Population served: 605
Service connections: 300
Ownership: local government
Water source: groundwater (wells)

DUNCAN TOWN OF is one of 272 community water systems in Arizona in the 501 to 3,300 people size category, serving 605 people from groundwater.

As of August 1, 2026, its federal record holds 25 entries between 1979 and 2025, all of which EPA lists as closed.

All 25 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, inorganic chemicals, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

Monitoring, Regular
—
Benzene
April 1, 2025 – June 30, 2025
Resolved
Monitoring and Reporting (DBP)
—
Chlorine
April 1, 2019 – June 30, 2019
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 2009 – June 30, 2009
Resolved
Monitoring, Regular
—
Radium-226
April 1, 2009 – June 30, 2009
Resolved
Monitoring, Check/Repeat/Confirmation
—
Nitrate
January 31, 1990 – January 30, 1993
Archived
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Trichloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Benzene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Toluene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Ethylbenzene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Styrene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1987 – January 1, 1992
Archived
Monitoring, Check/Repeat/Confirmation
—
Fluoride
June 24, 1979 – July 23, 1979
Archived
Monitoring, Check/Repeat/Confirmation
—
Fluoride
June 24, 1979 – July 23, 1979
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, 2025 – June 30, 2025	Monitoring, Regular	Benzene	—	Resolved
April 1, 2019 – June 30, 2019	Monitoring and Reporting (DBP)	Chlorine	—	Resolved
June 1, 2009 – June 30, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2009 – June 30, 2009	Monitoring, Regular	Radium-226	—	Resolved
January 31, 1990 – January 30, 1993	Monitoring, Check/Repeat/Confirmation	Nitrate	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,1-Dichloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,2-Dichloroethane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,1,1-Trichloroethane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,2-Dichloropropane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Trichloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	1,1,2-Trichloroethane	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Tetrachloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	CHLOROBENZENE	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Benzene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Toluene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Ethylbenzene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Styrene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	Carbon tetrachloride	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	DICHLOROMETHANE	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	o-Dichlorobenzene	—	Archived
January 1, 1987 – January 1, 1992	Monitoring, Regular	p-Dichlorobenzene	—	Archived
June 24, 1979 – July 23, 1979	Monitoring, Check/Repeat/Confirmation	Fluoride	—	Archived
June 24, 1979 – July 23, 1979	Monitoring, Check/Repeat/Confirmation	Fluoride	—	Archived

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

Enforcement actions

January 22, 2025State Public Notification requested712 linked violations
August 1, 2024State Violation/Reminder Notice240 linked violations
September 30, 1980State Othergeneral compliance action — not tied to a specific violation on record

Common questions

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

DUNCAN TOWN OF

928-359-2791

DUNCAN, AZ 85534