Drinking Water Compliance OS

ROHNERT PARK, CA · Sonoma County

ROHNERT PARK, 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 California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID)
CA4910014
System type
Community Water System
Population served
43,821
Service connections
10,427
Ownership
local government
Water source
groundwater (wells)

Violation history

  • Monitoring, Routine (RTCR)

    Revised Total Coliform Rule

    July 1, 2021 – July 31, 2021

    Resolved
  • Monitoring, Regular

    Arsenic

    April 1, 2021 – June 30, 2021

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Nitrate

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    trans-1,2-Dichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Benzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Toluene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Styrene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    January 1, 2017 – December 31, 2017

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2017 – December 31, 2017

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Contact

HENDERSEN, MARK

707-588-3316

ROHNERT PARK, CA 94928