Drinking Water Compliance OS

SURPRISE, AZ · Maricopa County

TOLLESON CITY OF 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)
AZ0407101
System type
Community Water System
Population served
9,300
Service connections
2,040
Ownership
local government
Water source
surface water (rivers, lakes, or reservoirs)

Violation history

  • Monitoring, Routine Minor (TCR)

    —

    Coliform (TCR)

    May 1, 2008 – May 31, 2008

    Resolved

  • Monitoring and Reporting (DBP)

    —

    Chlorine

    January 1, 2004 – March 31, 2004

    Resolved

  • Monitoring, Regular

    —

    Chromium

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    Fluoride

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    Barium

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    Selenium

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    Arsenic

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    Mercury

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    Cadmium

    September 30, 1988 – September 29, 1991

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloropropane

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Trichloroethylene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Tetrachloroethylene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    CHLOROBENZENE

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Benzene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Toluene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Ethylbenzene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Styrene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    1,2-Dichloroethane

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    cis-1,2-Dichloroethylene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    DICHLOROMETHANE

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    p-Dichlorobenzene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    1,1-Dichloroethylene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    trans-1,2-Dichloroethylene

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    1,1,1-Trichloroethane

    January 1, 1987 – July 1, 1990

    Archived

  • Monitoring, Regular

    —

    Carbon tetrachloride

    January 1, 1987 – July 1, 1990

    Archived

  • Maximum Contaminant Level Violation, Single Sample

    Health-based

    Nitrate

    August 19, 1983 – October 18, 1983

    Archived

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    April 1, 1979 – March 31, 1983

    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.

Contact

LARSON, KEVIN E

623-696-9176

SURPRISE, AZ 85379