Tap Truth EPA drinking water records, in plain English

Public water system record

Little Potato Slough Mutual

Serves Terminous, San Joaquin County, CA · 1,510 people served

Federal records show 4 health-based violations and no monitoring/reporting issues for Little Potato Slough Mutual in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • CA3910022
  • LODI
  • CA
  • 1,510 served

System profile

Source water Surface water
ZIP 95242
EPA system ID CA3910022

Verify this system on EPA ECHO →

Health-based violations, last 10 years
4
Resolved
4
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Little Potato Slough Mutual draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit), 2019.
  • Most recent formal enforcement: compliance order (no penalty) by California, February 2022.
  • Record on file since 1988, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 202 service lines.

Check whether Little Potato Slough Mutual serves your address

Address suggestions by Mapbox

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Oct 1, 2021 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.068 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 220 Jul 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Apr 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 220 Jan 1, 2019 Resolved No

Full record since 1988

EPA's records for Little Potato Slough Mutual go back to 1988. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 15 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 10
1990s 0 1
2000s 0 4
2010 to October 18, 2016 1 0
October 19, 2016 to 2019 3 0
2020s 1 0

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began April 2016, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Apr 1, 2016 Resolved

Enforcement actions

California regulators took 5 formal enforcement actions against Little Potato Slough Mutual between 2005 and 2022. The most recent was a compliance order (no penalty) in February 2022.

Date By Action Violations covered
Feb 16, 2022 California Compliance order (no penalty) 1 violation (1 health-based): Total Trihalomethanes (TTHMs)
May 21, 2019 California Compliance order (no penalty) 3 violations (3 health-based): Haloacetic Acids (HAA5)
May 31, 2016 California Compliance order (no penalty) 1 violation (1 health-based): Haloacetic Acids (HAA5)
Feb 15, 2005 California Compliance order (no penalty) 1 violation: Miscellaneous Other Rules
Feb 11, 2005 California Compliance order (no penalty) 1 violation: Lead and Copper Rule

What the violations mean

Haloacetic Acids (HAA5)

3 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Little Potato Slough Mutual draws water from 1 surface water intake.

Annual water quality report

Little Potato Slough Mutual must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.

Certified drinking water labs by state EPA guidance for private wells