Public water system · CA2100584
ActiveMcevoy Ranch Water System
At a glance
Mcevoy Ranch Water System (PWSID CA2100584) is an active non-transient non-community water system in Marin County, California. It reports serving 66 people through 8 service connections. Its primary water source is surface water, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
66
Service connections
8
Primary source
SW
Surface water
System type
NTNCWS
Non-transient non-community water system
System record
How does Mcevoy Ranch Water System compare with other water systems in Marin County?
By EPA's size categories, Mcevoy Ranch Water System is a very small system (500 people or fewer). Marin County has 46 active public water systems. Its population served is well below the county average of 6,203 people per system, and accounts for less than 0.1% of the 285,353 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 Mcevoy Ranch Water System is well below 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. 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 Mcevoy Ranch Water System?
EPA lists Mcevoy Ranch Water System as privately owned. 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. 22 of the 46 active systems in Marin County (48%) are also privately owned.
Does Mcevoy Ranch Water System 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 Mcevoy Ranch Water System. For the latest compliance status, check EPA ECHO for current compliance history.
Mcevoy Ranch Water System: frequently asked questions
Who runs Mcevoy Ranch Water System?
Mcevoy Ranch Water System (PWSID CA2100584) is a non-transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Mcevoy Ranch Water System serve?
Mcevoy Ranch Water System reports serving 66 people through 8 service connections in Marin County, California.
Where does Mcevoy Ranch Water System 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 Mcevoy Ranch Water System have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Mcevoy Ranch Water System'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 Mcevoy Ranch Water System's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mcevoy Ranch Water System 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 Marin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Marin Municipal Water District | Marin | 186,895 | Community | Surface water |
| North Marin Water District | Marin | 61,691 | Community | Surface water |
| Nps Ggnra | Marin | 18,447 | Community | Purchased surface water |
| Bolinas Community PUD | Marin | 2,483 | Community | Surface water |
| North Marin Wd - Pt. Reyes | Marin | 1,841 | Community | Groundwater |
| Csp - Angel Island St Park | Marin | 1,622 | Transient non-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, “Mcevoy Ranch Water System, PWSID CA2100584, California”, https://aquacensus.com/water-systems/california/mcevoy-ranch-water-system-ca2100584 (data as of October 1, 2026).