Public water system · CA1000186
ActiveHelm School
At a glance
Helm School (PWSID CA1000186) is an active community water system in Fresno County, California. It reports serving 105 people through 11 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
105
Service connections
11
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Helm School compare with other water systems in Fresno County?
By EPA's size categories, Helm School is a very small system (500 people or fewer). Fresno County has 328 active public water systems. Its population served is well below the county average of 3,205 people per system, and accounts for less than 0.1% 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 Helm School is well below 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 Helm School?
EPA lists Helm School 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 Helm School have drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in October 2024. The violations listed here began between July 1993 and October 2024. By type: 2 monitoring and reporting, 2 contaminant level above the legal limit, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2009-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 6 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.
Helm School: frequently asked questions
Who runs Helm School?
Helm School (PWSID CA1000186) is a community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does Helm School serve?
Helm School reports serving 105 people through 11 service connections in Fresno County, California.
Where does Helm School 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 Helm School have any drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in October 2024. 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 Helm School'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 6 violations for this system; 3 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the CA state drinking water program.
Where can I find Helm School's water quality report?
As a community water system, Helm School 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 |
| 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 |
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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, “Helm School, PWSID CA1000186, California”, https://aquacensus.com/water-systems/california/helm-school-ca1000186 (data as of October 1, 2026).