Drinking Water Compliance OS

PHOENIX, AZ · Maricopa County

PHOENIX-K O SYSTEM Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of December 1, 1994. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Maricopa County, AZ.

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)
AZ0407041
System type
Community Water System
Population served
200
Service connections
50
Ownership
public/private mix
Water source
groundwater (wells)

Violation history

  • Monitoring, Regular

    Fluoride

    July 1, 1988 – September 30, 1988

    Resolved
  • Monitoring, Regular

    Selenium

    July 1, 1988 – September 30, 1988

    Resolved
  • Monitoring, Regular

    Cadmium

    July 1, 1988 – September 30, 1988

    Resolved
  • Monitoring, Regular

    Chromium

    July 1, 1988 – September 30, 1988

    Resolved
  • Monitoring, Regular

    Mercury

    July 1, 1988 – September 30, 1988

    Resolved
  • Monitoring, Regular

    Nitrate

    July 1, 1988 – September 30, 1988

    Resolved
  • Monitoring, Regular

    Arsenic

    October 2, 1985 – September 30, 1988

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Last known contact on file (system is inactive)

Not on record

Phone not on record

PHOENIX, AZ 85003