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Public water system record

City of Huron

Serves Huron, Fresno County, CA · 9,306 people served

Federal records show 21 health-based violations and no monitoring/reporting issues for City of Huron in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • CA1010044
  • HURON
  • CA
  • 9,306 served

System profile

Source water Surface water
ZIP 93234
EPA system ID CA1010044

Verify this system on EPA ECHO →

Health-based violations, last 10 years
21
Resolved
0
Unresolved
0
Archived by EPA
21
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • City of Huron draws water from 1 surface water intake.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.16 mg/L, federal limit 0.08 mg/L (2 times the limit), 2021.
  • Most recent formal enforcement: compliance order (no penalty) by California, January 2016.
  • Record on file since 1983, with 49 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 1,027 unknown out of 1,027 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 0.16 mg/L, federal limit 0.08 mg/L (2 times the limit)
 220 Jul 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.14 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
 220 Apr 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.138 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 220 Jan 1, 2021 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.132 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 220 Oct 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 220 Jul 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.102 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Apr 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2020 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
CARBON, TOTAL
Treatment technique failure
 210 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Jul 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.12 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Apr 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.137 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 220 Jan 1, 2019 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.136 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 220 Oct 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Jul 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
CARBON, TOTAL
Treatment technique failure
 210 Apr 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.082 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Jan 1, 2018 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0923 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 220 Jul 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1063 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 220 Apr 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1225 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Jan 1, 2017 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1175 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 220 Oct 1, 2016 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No

Full record since 1983

EPA's records for City of Huron go back to 1983. Before October 19, 2016 they list 49 health-based violations (20 resolved, 29 archived by EPA without a recorded fix) and 9 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 1
1990s 1 0
2000s 13 5
2010 to October 18, 2016 35 3
October 19, 2016 to 2019 13 0
2020s 7 0

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

Show all 49 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1175 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Oct 1, 2016 Archived
CARBON, TOTAL
Treatment technique failure
 Jul 1, 2016 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.12 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Jul 1, 2016 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1433 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
 Apr 1, 2016 Archived
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.074 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Jan 1, 2016 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.177 mg/L, federal limit 0.08 mg/L (2.2 times the limit)
 Jan 1, 2016 Archived
Total Coliform
Contaminant limit exceeded
 Oct 1, 2015 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.076 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
 Oct 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.169 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 Oct 1, 2015 Archived
Total Coliform
Contaminant limit exceeded
 Sep 1, 2015 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Jul 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.17 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 Jul 1, 2015 Archived
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.073 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Apr 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1593 mg/L, federal limit 0.08 mg/L (2 times the limit)
 Apr 1, 2015 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.124 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 Jan 1, 2015 Archived
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
 Oct 1, 2014 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.17 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 Oct 1, 2014 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.173 mg/L, federal limit 0.08 mg/L (2.2 times the limit)
 Jul 1, 2014 Archived
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.0802 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
 Jul 1, 2014 Archived
Total Coliform
Contaminant limit exceeded
 Apr 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.132 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 Apr 1, 2014 Archived
Total Coliform
Contaminant limit exceeded
 Mar 1, 2014 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jan 1, 2014 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.103 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Oct 1, 2013 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Jul 1, 2013 Archived
Total Coliform
Contaminant limit exceeded
 Jul 1, 2013 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
 Apr 1, 2013 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.129 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
 Jan 1, 2013 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.123 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Oct 1, 2012 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2012 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.142 mg/L, federal limit 0.08 mg/L (1.8 times the limit)
 Oct 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.154 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
 Jul 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.166 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 Apr 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.155 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
 Jan 1, 2010 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.166 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 Oct 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.164 mg/L, federal limit 0.08 mg/L (2.1 times the limit)
 Jul 1, 2009 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1009 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jul 1, 2007 Resolved
CARBON, TOTAL
Treatment technique failure
 Apr 1, 2007 Archived
CARBON, TOTAL
Treatment technique failure
 Jan 1, 2007 Archived
CARBON, TOTAL
Treatment technique failure
 Oct 1, 2006 Archived
CARBON, TOTAL
Treatment technique failure
 Jul 1, 2006 Archived
CARBON, TOTAL
Treatment technique failure
 Apr 1, 2006 Archived
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1049 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
 Jan 1, 2006 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1371 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
 Oct 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.152 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
 Jul 1, 2005 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jun 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.119 mg/L, federal limit 0.08 mg/L (1.5 times the limit)
 Apr 1, 2005 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jun 1, 1996 Resolved

Enforcement actions

California regulators took 9 formal enforcement actions against City of Huron between 2005 and 2016. The most recent was a compliance order (no penalty) in January 2016.

Date By Action Violations covered
Jan 22, 2016 California Compliance order (no penalty) 2 violations (2 health-based): Total Coliform
Nov 2, 2014 California Compliance order (no penalty) 1 violation (1 health-based): Total Coliform
Oct 6, 2014 California Compliance order (no penalty) 34 violations (34 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Jun 18, 2014 California Compliance order (no penalty) 2 violations (2 health-based): Total Coliform
Nov 12, 2013 California Compliance order (no penalty) 1 violation (1 health-based): Total Coliform
Oct 23, 2008 California Compliance order (no penalty) 2 violations: Surface Water Treatment Rule
May 15, 2008 California Compliance order (no penalty) 19 violations (19 health-based): Total Trihalomethanes (TTHMs)
Jul 6, 2007 California Compliance order (no penalty) 8 violations (8 health-based): CARBON, TOTAL
Jun 8, 2005 California Compliance order (no penalty) 1 violation (1 health-based): Surface Water Treatment Rule

What the violations mean

Total Trihalomethanes (TTHMs)

19 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

CARBON, TOTAL

2 incidents

The system did not complete a treatment step or action that federal rules require for CARBON, TOTAL (a treatment technique violation).

The utility had to notify customers about each of these violations.

Where the water comes from

City of Huron draws water from 1 surface water intake.

Annual water quality report

City of Huron 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