Public Water Partners

AJO, AZ · Pima County

AJO IMPROVEMENT COMPANY Water System

Consumer Confidence Report status

AJO IMPROVEMENT 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 AJO IMPROVEMENT 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)
AZ0410001
System type
Community Water System
Population served
2,654
Service connections
1,200
Ownership
public/private mix
Water source
groundwater (wells)

AJO IMPROVEMENT COMPANY is one of 272 community water systems in Arizona in the 501 to 3,300 people size category, serving 2,654 people from groundwater.

As of August 1, 2026, its federal record holds 8 entries between 1985 and 2023, all of which EPA lists as closed. Nothing has been added since 2023.

All 8 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 and the Stage 2 Disinfectants and Disinfection Byproducts Rule.

Violation history

  • Monitoring and Reporting (DBP)

    —

    Total Haloacetic Acids (HAA5)

    October 1, 2023 – December 31, 2023

    Resolved

  • Monitoring, Regular

    —

    Barium

    October 1, 1988 – December 31, 1988

    Archived

  • Monitoring, Regular

    —

    Chromium

    October 1, 1988 – December 31, 1988

    Archived

  • Monitoring, Regular

    —

    Cadmium

    October 1, 1988 – December 31, 1988

    Archived

  • Monitoring, Regular

    —

    Selenium

    October 1, 1988 – December 31, 1988

    Archived

  • Monitoring, Regular

    —

    Nitrate

    October 1, 1988 – December 31, 1988

    Archived

  • Monitoring, Regular

    —

    Mercury

    October 1, 1988 – December 31, 1988

    Archived

  • Monitoring, Regular

    —

    Arsenic

    October 18, 1985 – October 16, 1988

    Archived

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

Enforcement actions

No enforcement actions on record for this system.

Common questions

Is AJO IMPROVEMENT COMPANY required to publish a Consumer Confidence Report?

Yes. AJO IMPROVEMENT 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 AJO IMPROVEMENT COMPANY’s next Consumer Confidence Report due?

AJO IMPROVEMENT COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does AJO IMPROVEMENT COMPANY have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for AJO IMPROVEMENT 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

LANE, JOHN

520-387-2016

AJO, AZ 85321