Public water system · CA2410021
ActiveUsfws San Luis Nwr Complex
At a glance
Usfws San Luis Nwr Complex (PWSID CA2410021) is an active non-transient non-community water system in Merced County, California. It reports serving 196 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
196
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Usfws San Luis Nwr Complex compare with other water systems in Merced County?
By EPA's size categories, Usfws San Luis Nwr Complex 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 Usfws San Luis Nwr Complex 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 Usfws San Luis Nwr Complex?
EPA lists Usfws San Luis Nwr Complex as owned by the federal 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. 2 of the 120 active systems in Merced County (1.7%) are also owned by the federal government.
Does Usfws San Luis Nwr Complex have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Usfws San Luis Nwr Complex. For the latest compliance status, check EPA ECHO for current compliance history.
Usfws San Luis Nwr Complex: frequently asked questions
Who runs Usfws San Luis Nwr Complex?
Usfws San Luis Nwr Complex (PWSID CA2410021) is a non-transient non-community water system owned by the federal government. It is regulated by the CA state drinking water program.
How many people does Usfws San Luis Nwr Complex serve?
Usfws San Luis Nwr Complex reports serving 196 people through 3 service connections in Merced County, California.
Where does Usfws San Luis Nwr Complex 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 Usfws San Luis Nwr Complex have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Usfws San Luis Nwr Complex'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Usfws San Luis Nwr Complex's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Usfws San Luis Nwr Complex 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, “Usfws San Luis Nwr Complex, PWSID CA2410021, California”, https://aquacensus.com/water-systems/california/usfws-san-luis-nwr-complex-ca2410021 (data as of October 1, 2026).