Public water system · CA1610004
ActiveCorcoran, City of
At a glance
City of Corcoran (PWSID CA1610004) is an active community water system in Kings County, California. It reports serving 22,808 people through 3,698 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in January 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
22,808
Service connections
3,698
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Corcoran compare with other water systems in Kings County?
By EPA's size categories, City of Corcoran is a large system (10,001 to 100,000 people). Kings County has 43 active public water systems, and City of Corcoran is the 3rd-largest of them by population served. Its population served is about 6.3 times the county average of 3,626 people per system, and accounts for 15% of the 155,929 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Corcoran is about 3.4 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. California has 2,997 active community water systems, 40% of the state's 7,479 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,179 California systems (83%) list groundwater as their primary source.
Who owns and regulates City of Corcoran?
EPA lists City of Corcoran as owned by a local government. The CA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 15 of the 43 active systems in Kings County (35%) are also owned by a local government.
Does City of Corcoran have drinking water violations?
EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in January 2014. The violations listed here began between July 1993 and January 2014. By type: 7 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 10 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2014-01-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2004-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2004-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2003-05-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 10 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
City of Corcoran: frequently asked questions
Who runs City of Corcoran?
City of Corcoran (PWSID CA1610004) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does City of Corcoran serve?
City of Corcoran reports serving 22,808 people through 3,698 service connections in Kings County, California.
Where does City of Corcoran get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Corcoran have any drinking water violations?
EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in January 2014. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is City of Corcoran's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 10 violations for this system; 3 are health-based, and the most recent began in January 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find City of Corcoran's water quality report?
As a community water system, City of Corcoran must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Kings County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hanford, City of | Kings | 62,127 | Community | Groundwater |
| Lemoore, City of | Kings | 27,185 | Community | Groundwater |
| Lemoore Naval Air Station | Kings | 15,000 | Community | Surface water |
| Avenal, City of | Kings | 13,696 | Community | Surface water |
| Armona Community Services Dist | Kings | 4,143 | Community | Groundwater |
| Home Garden Csd | Kings | 1,750 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Corcoran, City of, PWSID CA1610004, California”, https://aquacensus.com/water-systems/california/corcoran-city-of-ca1610004 (data as of October 1, 2026).