Drinking Water Compliance OS

ROSEMEAD, CA · Los Angeles County

ADAMS RANCH MUTUAL Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of March 2, 2017. 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 Los Angeles 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)
CA1900009
System type
Community Water System
Population served
500
Service connections
177
Ownership
privately owned
Water source
surface water (rivers, lakes, or reservoirs)

Violation history

No violations on record for this system.

Enforcement actions

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

YBARRA, VICTOR

Phone not on record

ROSEMEAD, CA 91770-0000