Is CASAS ARROYO ASSOCIATION INC required to publish a Consumer Confidence Report?

Yes. CASAS ARROYO ASSOCIATION INC 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 CASAS ARROYO ASSOCIATION INC’s next Consumer Confidence Report due?

CASAS ARROYO ASSOCIATION INC’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.

SONOITA, AZ · Santa Cruz County

CASAS ARROYO ASSOCIATION INC Water System

Consumer Confidence Report status

CASAS ARROYO ASSOCIATION INC 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 CASAS ARROYO ASSOCIATION INC.

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): AZ0412020
System type: Community Water System
Population served: 27
Service connections: 27
Ownership: privately owned
Water source: groundwater (wells)

CASAS ARROYO ASSOCIATION INC is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 27 people from groundwater.

As of August 1, 2026, its federal record holds 12 entries between 1984 and 2025, all of which EPA lists as closed.

Of the 12, 11 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 Radionuclides and Revised Rad Rule, and the Groundwater Rule.

Violation history

Failure To Address Deficiency
Health-based
Groundwater Rule
March 23, 2025 – June 18, 2025
Resolved
Report Sample Result/Fail Monitor (RTCR)
—
Revised Total Coliform Rule
December 1, 2022 – January 27, 2023
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 1, 1989 – May 31, 1993
Resolved
Monitoring, Regular
—
Chromium
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Nitrate
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Mercury
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Fluoride
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Cadmium
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Selenium
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Barium
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Arsenic
November 30, 1988 – November 29, 1991
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
December 31, 1984 – December 31, 1988
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
March 23, 2025 – June 18, 2025	Failure To Address Deficiency	Groundwater Rule	Health-based	Resolved
December 1, 2022 – January 27, 2023	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	—	Resolved
June 1, 1989 – May 31, 1993	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
November 30, 1988 – November 29, 1991	Monitoring, Regular	Chromium	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Nitrate	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Mercury	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Fluoride	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Cadmium	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Selenium	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Barium	—	Archived
November 30, 1988 – November 29, 1991	Monitoring, Regular	Arsenic	—	Archived
December 31, 1984 – December 31, 1988	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

January 14, 2003State Compliance achieved1 linked violation

Common questions

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

POWELL, ERIK

520-444-0410

SONOITA, AZ 85637