LODI, CA · San Joaquin County

LITTLE POTATO SLOUGH MUTUAL 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): CA3910022
System type: Community Water System
Population served: 1,510
Service connections: 202
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2019 – September 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2019 – June 30, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2016 – June 30, 2016
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
August 1, 2003 – August 28, 2003
Resolved
Monitoring, Regular
—
Selenium
June 1, 1989 – June 30, 1989
Archived
Monitoring, Regular
—
Arsenic
June 1, 1989 – June 30, 1989
Archived
Monitoring, Regular
—
Fluoride
June 1, 1989 – June 30, 1989
Archived
Monitoring, Regular
—
Nitrate
June 1, 1989 – June 30, 1989
Archived
Notification, Public
—
No contaminant on record
June 1, 1989 – June 30, 1989
Archived
Monitoring, Regular
—
Arsenic
June 1, 1988 – June 30, 1988
Archived
Notification, Public
—
No contaminant on record
June 1, 1988 – June 30, 1988
Archived
Monitoring, Regular
—
Fluoride
June 1, 1988 – June 30, 1988
Archived
Monitoring, Regular
—
Nitrate
June 1, 1988 – June 30, 1988
Archived
Monitoring, Regular
—
Selenium
June 1, 1988 – June 30, 1988
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
August 1, 2003 – August 28, 2003	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
June 1, 1989 – June 30, 1989	Monitoring, Regular	Selenium	—	Archived
June 1, 1989 – June 30, 1989	Monitoring, Regular	Arsenic	—	Archived
June 1, 1989 – June 30, 1989	Monitoring, Regular	Fluoride	—	Archived
June 1, 1989 – June 30, 1989	Monitoring, Regular	Nitrate	—	Archived
June 1, 1989 – June 30, 1989	Notification, Public	—	—	Archived
June 1, 1988 – June 30, 1988	Monitoring, Regular	Arsenic	—	Archived
June 1, 1988 – June 30, 1988	Notification, Public	—	—	Archived
June 1, 1988 – June 30, 1988	Monitoring, Regular	Fluoride	—	Archived
June 1, 1988 – June 30, 1988	Monitoring, Regular	Nitrate	—	Archived
June 1, 1988 – June 30, 1988	Monitoring, Regular	Selenium	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

November 3, 2020State Compliance achieved28 linked violations
May 21, 2019State Administrative/Compliance Order without penalty issued18 linked violations
May 31, 2016State Administrative/Compliance Order without penalty issued69 linked violations

Contact

ARNERICH, DENYSE

209-339-1602

LODI, CA 95242