CA / Coalinga
CA · Tap water records
Coalinga tap water, in plain English
Here is what the EPA's own data shows about tap water in Coalinga. According to EPA SDWIS data retrieved June 2026, Coalinga is served by 6 active community water systems, together reported to serve about 18,440 people.
As of June 2026, EPA records show 600 violations across the community water system(s) serving Coalinga, going back to the earliest EPA record. 570 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Coalinga-City
17,277 served · surface water · PWSID CA1010004 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 13 times between July 2002 and October 2015. The EPA record lists a level of 0.1063 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in September 2015. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2016. All have since returned to compliance, per EPA records.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2015. All have since returned to compliance, per EPA records.
Lanare Community Services Dist
540 served · groundwater · PWSID CA1000053 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 3 times in January 2021. The EPA record lists a level of 0.2 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Health-based Arsenic: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 117 times between July 2007 and July 2018. The EPA record lists a level of 0.017 MG/L; the limit (MCL) is 0.01 MG/L. All have since returned to compliance, per EPA records.
- Monitoring Consumer Confidence Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 2009. All have since returned to compliance, per EPA records.
- Monitoring Arsenic: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 3 times in January 2009. All have since returned to compliance, per EPA records.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in July 1993. All have since returned to compliance, per EPA records.
Harris Feeding Company
203 served · surface water · PWSID CA1009078 - Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 10 times between April 2018 and July 2024. The EPA record lists a level of 0.07 MG/L; the limit (MCL) is 0.06 MG/L. EPA records do not show all of these as returned to compliance.
- Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 68 times between July 2008 and January 2017. The EPA record lists a level of 0.107 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 26 times between October 2011 and April 2015. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Health-based Coliform (TCR): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 4 times between August 2007 and December 2010. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2015. All have since returned to compliance, per EPA records.
- Monitoring Interim Enhanced Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between February 2009 and March 2009. All have since returned to compliance, per EPA records.
Harris Farms South 101-144
182 served · surface water · PWSID CA1009028 - Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 16 times between April 2015 and January 2017. The EPA record lists a level of 0.067 MG/L; the limit (MCL) is 0.06 MG/L. All have since returned to compliance, per EPA records.
- Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 60 times between January 2008 and October 2015. The EPA record lists a level of 0.128 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 6 times between January 2011 and December 2013. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times in January 2015. All have since returned to compliance, per EPA records.
Harris Farms Headquarters
140 served · surface water · PWSID CA1009027 - Health-based Total Haloacetic Acids (HAA5): a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 16 times between April 2015 and January 2017. The EPA record lists a level of 0.064 MG/L; the limit (MCL) is 0.06 MG/L. All have since returned to compliance, per EPA records.
- Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 60 times between July 2008 and October 2015. The EPA record lists a level of 0.11 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 98 times between July 2009 and February 2014. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded once in October 2025. EPA records do not show all of these as returned to compliance.
- Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times in January 2015. All have since returned to compliance, per EPA records.
- Monitoring Coliform (TCR): a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in March 2008. All have since returned to compliance, per EPA records.
Harris Farms/Horse Barn
98 served · surface water · PWSID CA1000213 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 56 times between April 2009 and January 2017. The EPA record lists a level of 0.1028 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Health-based Surface Water Treatment Rule: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded 16 times between September 2010 and February 2014. The EPA record for these does not include a measured level. All have since returned to compliance, per EPA records.
- Monitoring contaminant code null: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times in January 2015. All have since returned to compliance, per EPA records.
- Monitoring Interim Enhanced Surface Water Treatment Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 4 times between February 2009 and March 2009. All have since returned to compliance, per EPA records.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.