SONORA, CA · Tuolumne County

TUD - BIG HILL WATER SYSTEM Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of February 20, 2015. 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 Tuolumne 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): CA5510029
System type: Community Water System
Population served: 531
Service connections: 226
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 2000 – October 31, 2000
Archived
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
December 1, 1998 – December 31, 1998
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2000 – October 31, 2000	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived
December 1, 1998 – December 31, 1998	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Archived

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

Enforcement actions

February 22, 2006State Compliance achieved1 linked violation
September 23, 2002State Compliance achieved1 linked violation
May 31, 2002State Violation/Reminder Notice1 linked violation
June 18, 1996State Compliance achieved20 linked violations

Last known contact on file (system is inactive)

PERKINS, DON

209-532-5536

SONORA, CA 95370