Is LITTLE POTATO SLOUGH MUTUAL required to publish a Consumer Confidence Report?

Yes. LITTLE POTATO SLOUGH MUTUAL is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is LITTLE POTATO SLOUGH MUTUAL’s next Consumer Confidence Report due?

LITTLE POTATO SLOUGH MUTUAL’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

LODI, CA · San Joaquin County

LITTLE POTATO SLOUGH MUTUAL Water System

Consumer Confidence Report status

LITTLE POTATO SLOUGH MUTUAL must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for LITTLE POTATO SLOUGH MUTUAL.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)

LITTLE POTATO SLOUGH MUTUAL is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 1,510 people from surface water.

As of August 1, 2026, its federal record holds 11 entries between 1988 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.

Of the 11, 7 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals, the Stage 2 Disinfectants and Disinfection Byproducts Rule, and the Lead and Copper Rule.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2021 – December 31, 2021
Resolved
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, 2016 – June 30, 2016
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 2004 – February 11, 2005
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
—
Nitrate
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
October 1, 2021 – December 31, 2021	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2019 – September 30, 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
October 1, 2004 – February 11, 2005	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	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	Nitrate	—	Archived

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

Enforcement actions

February 11, 2005State Administrative/Compliance Order without penalty issued1 linked violation
August 28, 2003State Compliance achieved4 linked violations

Common questions

Is LITTLE POTATO SLOUGH MUTUAL required to publish a Consumer Confidence Report?: Yes. LITTLE POTATO SLOUGH MUTUAL is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is LITTLE POTATO SLOUGH MUTUAL’s next Consumer Confidence Report due?: LITTLE POTATO SLOUGH MUTUAL’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LITTLE POTATO SLOUGH MUTUAL have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for LITTLE POTATO SLOUGH MUTUAL.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

ARNERICH, DENYSE

209-339-1602

LODI, CA 95242