PORTERVILLE, CA · Tulare County

SIERRA MUTUAL WATER COMPANY 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): CA5403110
System type: Community Water System
Population served: 43
Service connections: 16
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Nitrate
April 1, 2016 – June 30, 2016
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2011 – March 31, 2011
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
August 1, 2006 – August 31, 2006
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 2016 – June 30, 2016	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Resolved
August 1, 2006 – August 31, 2006	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

December 3, 2020State Compliance achieved2 linked violations
November 20, 2020State Administrative/Compliance Order without penalty issued1 linked violation
October 23, 2020State Administrative/Compliance Order with penalty issued1 linked violation
September 4, 2020State Administrative/Compliance Order without penalty issued2 linked violations
January 1, 2020State Compliance achieved4 linked violations
July 10, 2019State Compliance achieved4 linked violations
June 26, 2019State Administrative/Compliance Order without penalty issued1 linked violation
April 27, 2018State Administrative/Compliance Order without penalty issued1 linked violation
August 25, 2017State Formal Notice of Violation issued1 linked violation
April 24, 2017State Compliance achieved1 linked violation
March 20, 2017State Administrative/Compliance Order with penalty issued17 linked violations
May 27, 2016State Administrative/Compliance Order without penalty issued35 linked violations
July 10, 2012State Violation/Reminder Notice1 linked violation
August 10, 2011State Compliance achieved3 linked violations
July 10, 2011State Violation/Reminder Notice1 linked violation
December 10, 2010State Compliance achieved1 linked violation
September 14, 2010State Administrative/Compliance Order without penalty issued13 linked violations
November 10, 2008State Violation/Reminder Notice1 linked violation
November 10, 2007State Violation/Reminder Notice2 linked violations
October 1, 2007State Administrative/Compliance Order without penalty issued3 linked violations
September 10, 2007State Compliance achieved2 linked violations
August 10, 2007State Violation/Reminder Notice1 linked violation
July 10, 2007State Violation/Reminder Notice1 linked violation
June 30, 2007State Compliance achieved1 linked violation
June 10, 2007State Violation/Reminder Notice1 linked violation
January 10, 2007State Formal Notice of Violation issued2 linked violations
September 30, 2006State Compliance achieved1 linked violation
September 10, 2006State Formal Notice of Violation issued1 linked violation
July 10, 2006State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
June 30, 2006State Compliance achieved1 linked violation
June 10, 2006State Formal Notice of Violation issued1 linked violation
April 10, 2006State Formal Notice of Violation issued3 linked violations
January 10, 2006State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
January 10, 2006State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
January 31, 2005State Compliance achieved1 linked violation
January 10, 2005State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
January 10, 2005State Public Notification issued3 linked violations

Contact

DRUM, EMILY

714-599-4149

PORTERVILLE, CA 93257