Public water system · CA2400075
ActiveEl Nido Elementary School
At a glance
El Nido Elementary School (PWSID CA2400075) is an active non-transient non-community water system in Merced County, California. It reports serving 220 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in October 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
220
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does El Nido Elementary School compare with other water systems in Merced County?
By EPA's size categories, El Nido Elementary School is a very small system (500 people or fewer). Merced County has 120 active public water systems. Its population served is well below the county average of 2,228 people per system, and accounts for less than 0.1% of the 267,324 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so El Nido Elementary School is about half of that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. California has 1,466 active non-transient non-community water systems, 20% 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 El Nido Elementary School?
EPA lists El Nido Elementary 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. 30 of the 120 active systems in Merced County (25%) are also owned by a local government.
Does El Nido Elementary School have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 1996. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 1996-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.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.
El Nido Elementary School: frequently asked questions
Who runs El Nido Elementary School?
El Nido Elementary School (PWSID CA2400075) is a non-transient non-community water system owned by a local government. It is regulated by the CA state drinking water program.
How many people does El Nido Elementary School serve?
El Nido Elementary School reports serving 220 people through 1 service connection in Merced County, California.
Where does El Nido Elementary 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 El Nido Elementary School have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in October 1996. 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 El Nido Elementary 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 one violation for this system; it is health-based, and the most recent began in October 1996. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find El Nido Elementary School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. El Nido Elementary School is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Merced County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Merced | Merced | 93,692 | Community | Groundwater |
| City of Los Banos | Merced | 47,419 | Community | Groundwater |
| City of Atwater | Merced | 29,479 | Community | Groundwater |
| City of Livingston | Merced | 14,894 | Community | Groundwater |
| Winton Water & Sanitary Dist | Merced | 9,745 | Community | Groundwater |
| Delhi Cwd | Merced | 7,784 | 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, “El Nido Elementary School, PWSID CA2400075, California”, https://aquacensus.com/water-systems/california/el-nido-elementary-school-ca2400075 (data as of October 1, 2026).