Public water system · CA1010003
ActiveCity of Clovis
At a glance
City of Clovis (PWSID CA1010003) is an active community water system in Fresno County, California. It reports serving 130,130 people through 40,788 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in August 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
130,130
Service connections
40,788
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Clovis compare with other water systems in Fresno County?
By EPA's size categories, City of Clovis is a very large system (more than 100,000 people). Fresno County has 328 active public water systems, and City of Clovis is the 2nd-largest of them by population served. Its population served is about 41 times the county average of 3,205 people per system, and accounts for 12% of the 1,051,276 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 Clovis is about 19 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 609 California systems (8.1%) list surface water as their primary source.
Who owns and regulates City of Clovis?
EPA lists City of Clovis 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. 89 of the 328 active systems in Fresno County (27%) are also owned by a local government.
Does City of Clovis have drinking water violations?
EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in August 2013. The violations listed here began between July 1989 and August 2013. By type: 4 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2013-08-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1989-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | Yes | Resolved |
All 5 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 Clovis: frequently asked questions
Who runs City of Clovis?
City of Clovis (PWSID CA1010003) 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 Clovis serve?
City of Clovis reports serving 130,130 people through 40,788 service connections in Fresno County, California.
Where does City of Clovis get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does City of Clovis have any drinking water violations?
EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in August 2013. 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 Clovis' 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 5 violations for this system; 4 are health-based, and the most recent began in August 2013. 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 Clovis' water quality report?
As a community water system, City of Clovis 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 Fresno County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Fresno | Fresno | 545,716 | Community | Surface water |
| California State University Fresno | Fresno | 41,000 | Community | Groundwater |
| Cws - Selma | Fresno | 26,517 | Community | Groundwater |
| City of Sanger | Fresno | 26,357 | Community | Groundwater |
| Reedley, City of | Fresno | 26,076 | Community | Groundwater |
| Bakman Water Company | Fresno | 17,393 | 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, “City of Clovis, PWSID CA1010003, California”, https://aquacensus.com/water-systems/california/city-of-clovis-ca1010003 (data as of October 1, 2026).