Drinking Water Compliance OS

DOUGLAS, AZ · Cochise County

LA COSTA WATER USERS ASSOC Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)

Violation history

  • Monitoring, Source Water (GWR)

    E. COLI

    June 3, 2021 – June 8, 2021

    Resolved
  • Monitoring, Regular

    Nitrate

    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

    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

Contact

LEON, ROSANNA

520-234-7121

DOUGLAS, AZ 85607