Public Water Partners

TUCSON, AZ · Pima County

SIERRITA MOUNTAIN WATER COOP Water System

Consumer Confidence Report status

SIERRITA MOUNTAIN WATER COOP 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 SIERRITA MOUNTAIN WATER COOP.

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)
AZ0410208
System type
Community Water System
Population served
258
Service connections
67
Ownership
privately owned
Water source
groundwater (wells)

SIERRITA MOUNTAIN WATER COOP is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 258 people from groundwater.

As of August 1, 2026, its federal record holds 20 entries between 1987 and 2008, all of which EPA lists as closed. Nothing has been added since 2008.

All 20 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, the Radionuclides and Revised Rad Rule, and the Total Coliform Rules.

Violation history

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    July 1, 2008 – July 31, 2008

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    April 1, 1988 – June 30, 1988

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    November 21, 1987 – November 20, 1991

    Resolved

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 1987 – January 1, 1992

    Archived

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 1987 – January 1, 1992

    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

    —

    Carbon tetrachloride

    January 1, 1987 – January 1, 1992

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 1987 – January 1, 1992

    Archived

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    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

    —

    Trichloroethylene

    January 1, 1987 – January 1, 1992

    Archived

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

Enforcement actions

Common questions

Is SIERRITA MOUNTAIN WATER COOP required to publish a Consumer Confidence Report?

Yes. SIERRITA MOUNTAIN WATER COOP 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 SIERRITA MOUNTAIN WATER COOP’s next Consumer Confidence Report due?

SIERRITA MOUNTAIN WATER COOP’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does SIERRITA MOUNTAIN WATER COOP have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for SIERRITA MOUNTAIN WATER COOP.

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

SIERRITA MOUNTAIN WATER COOP

520-780-8028

TUCSON, AZ 85736