Public Water Partners

DOUGLAS, AZ · Cochise County

LA COSTA WATER USERS ASSOC Water System

Consumer Confidence Report status

LA COSTA WATER USERS ASSOC 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 LA COSTA WATER USERS ASSOC.

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)
AZ0402041
System type
Community Water System
Population served
30
Service connections
16
Ownership
public/private mix
Water source
groundwater (wells)

LA COSTA WATER USERS ASSOC is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 30 people from groundwater.

As of August 1, 2026, its federal record holds 10 entries between 1988 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.

Of the 10, 9 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 Consumer Confidence Rule, and the Groundwater Rule.

Violation history

  • Consumer Confidence Report Complete Failure to Report

    —

    Consumer Confidence Rule

    July 1, 2022 – September 14, 2023

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    June 3, 2021 – June 8, 2021

    Resolved

  • Monitoring, Regular

    —

    Barium

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Cadmium

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Chromium

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Fluoride

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Mercury

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Selenium

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Arsenic

    April 30, 1990 – April 29, 1993

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    January 1, 1988 – March 31, 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 LA COSTA WATER USERS ASSOC required to publish a Consumer Confidence Report?

Yes. LA COSTA WATER USERS ASSOC 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 LA COSTA WATER USERS ASSOC’s next Consumer Confidence Report due?

LA COSTA WATER USERS ASSOC’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does LA COSTA WATER USERS ASSOC have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for LA COSTA WATER USERS ASSOC.

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

LEON, ROSANNA

520-234-7121

DOUGLAS, AZ 85607