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Public water system record

Knights Ferry Comm. SVC. Dist.

Serves Knights Ferry, Stanislaus County, CA · 168 people served

Federal records show 5 health-based violations and no monitoring/reporting issues for Knights Ferry Comm. SVC. Dist. in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • CA5000008
  • KNIGHTS FERRY
  • CA
  • 168 served

System profile

Source water Surface water
ZIP 95361
EPA system ID CA5000008

Verify this system on EPA ECHO →

Health-based violations, last 10 years
5
Resolved
5
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Knights Ferry Comm. SVC. Dist. draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.102 mg/L, federal limit 0.08 mg/L (1.3 times the limit), 2017.
  • Most recent formal enforcement: compliance order (no penalty) by California, March 2017.
  • Record on file since 1980, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 68 service lines.

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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 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Oct 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Jul 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Apr 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Jan 1, 2017 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Oct 1, 2016 Resolved No

Full record since 1980

EPA's records for Knights Ferry Comm. SVC. Dist. go back to 1980. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 27 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 26
1990s 0 1
2010 to October 18, 2016 2 0
October 19, 2016 to 2019 4 0

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2016, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Oct 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Jan 1, 2016 Resolved

Enforcement actions

California regulators took 1 formal enforcement action against Knights Ferry Comm. SVC. Dist. in 2017. The most recent was a compliance order (no penalty) in March 2017.

Date By Action Violations covered
Mar 21, 2017 California Compliance order (no penalty) 6 violations (6 health-based): Total Trihalomethanes (TTHMs)

What the violations mean

Total Trihalomethanes (TTHMs)

5 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Knights Ferry Comm. SVC. Dist. draws water from 1 surface water intake.

Annual water quality report

Knights Ferry Comm. SVC. Dist. 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.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Knights Ferry Comm. SVC. Dist. for a copy.

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