Is WHY DWID required to publish a Consumer Confidence Report?

Yes. WHY DWID 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 WHY DWID’s next Consumer Confidence Report due?

WHY DWID’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.

AJO, AZ · Pima County

WHY DWID Water System

Consumer Confidence Report status

WHY DWID 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 WHY DWID.

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): AZ0410118
System type: Community Water System
Population served: 400
Service connections: 113
Ownership: privately owned
Water source: groundwater (wells)

WHY DWID is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 400 people from groundwater.

As of August 1, 2026, its federal record holds 24 entries between 1987 and 2024, all of which EPA lists as closed.

All 24 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 Total Coliform Rules.

Violation history

Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
February 1, 2024 – March 18, 2024
Resolved
Monitoring, Regular
—
Styrene
January 1, 2018 – December 31, 2018
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 2013 – March 31, 2013
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2013 – March 31, 2013
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 2013 – March 31, 2013
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 2013 – March 31, 2013
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Toluene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Benzene
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
Vinyl chloride
July 1, 2012 – September 30, 2012
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
April 1, 2012 – June 30, 2012
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
April 1, 2012 – June 30, 2012
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 2012 – March 31, 2012
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
October 1, 2011 – December 31, 2011
Resolved
Monitoring, Regular
—
Arsenic
July 1, 2008 – September 30, 2008
Resolved
Monitoring, Check/Repeat/Confirmation
—
Arsenic
September 30, 1990 – September 29, 1993
Archived
Monitoring, Check/Repeat/Confirmation
—
Arsenic
September 30, 1990 – September 29, 1993
Archived
Monitoring, Regular
—
Arsenic
October 1, 1987 – September 29, 1990
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1987 – December 31, 1987
Archived
Monitoring, Regular
—
Cadmium
October 1, 1987 – September 29, 1990
Archived
Monitoring, Regular
—
Selenium
October 1, 1987 – September 29, 1990
Archived
Monitoring, Regular
—
Chromium
October 1, 1987 – September 29, 1990
Archived
Monitoring, Regular
—
Barium
October 1, 1987 – September 29, 1990
Archived
Monitoring, Regular
—
Nitrate
October 1, 1987 – September 29, 1990
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
February 1, 2024 – March 18, 2024	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
January 1, 2018 – December 31, 2018	Monitoring, Regular	Styrene	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring, Regular	Carbon tetrachloride	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Toluene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Benzene	—	Resolved
July 1, 2012 – September 30, 2012	Monitoring, Regular	Vinyl chloride	—	Resolved
April 1, 2012 – June 30, 2012	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
April 1, 2012 – June 30, 2012	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2012 – March 31, 2012	Monitoring, Regular	Ethylbenzene	—	Resolved
October 1, 2011 – December 31, 2011	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
July 1, 2008 – September 30, 2008	Monitoring, Regular	Arsenic	—	Resolved
September 30, 1990 – September 29, 1993	Monitoring, Check/Repeat/Confirmation	Arsenic	—	Archived
September 30, 1990 – September 29, 1993	Monitoring, Check/Repeat/Confirmation	Arsenic	—	Archived
October 1, 1987 – September 29, 1990	Monitoring, Regular	Arsenic	—	Archived
October 1, 1987 – December 31, 1987	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 1, 1987 – September 29, 1990	Monitoring, Regular	Cadmium	—	Archived
October 1, 1987 – September 29, 1990	Monitoring, Regular	Selenium	—	Archived
October 1, 1987 – September 29, 1990	Monitoring, Regular	Chromium	—	Archived
October 1, 1987 – September 29, 1990	Monitoring, Regular	Barium	—	Archived
October 1, 1987 – September 29, 1990	Monitoring, Regular	Nitrate	—	Archived

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

Enforcement actions

March 6, 2015State Violation/Reminder Notice101 linked violations
April 16, 2013State Violation/Reminder Notice128 linked violations
April 16, 2013State Violation/Reminder Notice64 linked violations

Common questions

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

HADLEY, BILL

520-387-5460

AJO, AZ 85321