PORTERVILLE, CA · Tulare County

WILLIAMS 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): CA5400718
System type: Community Water System
Population served: 165
Service connections: 50
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 1981 – September 30, 1982	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

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

Enforcement actions

June 22, 2018State Administrative/Compliance Order without penalty issued1 linked violation
February 17, 2017State Compliance achieved1 linked violation
June 2, 2016State Compliance achieved18 linked violations
July 1, 2012State Compliance achieved1 linked violation
August 10, 2011State Compliance achieved2 linked violations
July 10, 2011State Violation/Reminder Notice1 linked violation
November 4, 2010State Compliance achievedgeneral compliance action — not tied to a specific violation on record
September 28, 2010State Administrative/Compliance Order without penalty issued1 linked violation
August 30, 2010State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 10, 2010State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
June 10, 2010State Compliance achieved1 linked violation
May 10, 2010State Violation/Reminder Notice1 linked violation
January 28, 2009State Compliance achieved4 linked violations
July 1, 2008State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
February 10, 2008State Violation/Reminder Notice1 linked violation
July 10, 2007State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
February 10, 2007State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 10, 2006State Formal Notice of Violation issued1 linked violation
July 10, 2006State Formal Notice of Violation issued4 linked violations
July 12, 2005State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record

Contact

MARTIN, EDDIE

559-788-9517

PORTERVILLE, CA 93258