Public water system · CA1010339
ActiveCalifornia State University Fresno
At a glance
California State University Fresno (PWSID CA1010339) is an active community water system in Fresno County, California. It reports serving 41,000 people through 160 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 2 violations for this system; all are health-based, and the most recent began in August 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
41,000
Service connections
160
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does California State University Fresno compare with other water systems in Fresno County?
By EPA's size categories, California State University Fresno is a large system (10,001 to 100,000 people). Fresno County has 328 active public water systems, and California State University Fresno is the 3rd-largest of them by population served. Its population served is about 13 times the county average of 3,205 people per system, and accounts for 3.9% 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 California State University Fresno is about 6.1 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 California State University Fresno?
EPA lists California State University Fresno as owned by a state 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. 3 of the 328 active systems in Fresno County (0.9%) are also owned by a state government.
Does California State University Fresno have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in August 1994. The violations listed here began between April 1994 and August 1994. By type: 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 1994-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 2 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.
California State University Fresno: frequently asked questions
Who runs California State University Fresno?
California State University Fresno (PWSID CA1010339) is a community water system owned by a state government. It is regulated by the CA state drinking water program.
How many people does California State University Fresno serve?
California State University Fresno reports serving 41,000 people through 160 service connections in Fresno County, California.
Where does California State University Fresno 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 California State University Fresno have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in August 1994. 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 California State University Fresno'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 2 violations for this system; all are health-based, and the most recent began in August 1994. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find California State University Fresno's water quality report?
As a community water system, California State University Fresno 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 |
| City of Clovis | Fresno | 130,130 | Community | Surface water |
| 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, “California State University Fresno, PWSID CA1010339, California”, https://aquacensus.com/water-systems/california/california-state-university-fresno-ca1010339 (data as of October 1, 2026).