KENTFIELD, CA · Sonoma County

SONOMA MISSION APARTMENTS Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of June 9, 2009. 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 Sonoma County, CA.

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): CA4900918
System type: Community Water System
Population served: 100
Service connections: 41
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Notification, Public
—
No contaminant on record
September 1, 1984 – September 30, 1984
Archived
Notification, Public
—
No contaminant on record
August 1, 1984 – August 31, 1984
Archived
Notification, Public
—
No contaminant on record
July 1, 1984 – July 31, 1984
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 1984 – September 30, 1984	Notification, Public	—	—	Archived
August 1, 1984 – August 31, 1984	Notification, Public	—	—	Archived
July 1, 1984 – July 31, 1984	Notification, Public	—	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

June 13, 2007State Administrative/Compliance Order without penalty issued1 linked violation
May 4, 2007State Compliance achieved2 linked violations
May 4, 2007State Administrative/Compliance Order without penalty issued2 linked violations
May 3, 2007State Administrative/Compliance Order without penalty issued1 linked violation
November 30, 2006State Compliance achieved1 linked violation
November 30, 2006State Administrative/Compliance Order without penalty issued1 linked violation
November 30, 2006Federal Compliance achieved1 linked violation

Last known contact on file (system is inactive)

SONOMA MISSION APARTMENTS

4158918923

KENTFIELD, CA 94914