Public water system · CA2600607
ActiveMeadowcliff Lodge & Coleville/Walker Koa
At a glance
Meadowcliff Lodge & Coleville/Walker Koa (PWSID CA2600607) is an active transient non-community water system in Mono County, California. It reports serving 25 people through 46 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in August 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
46
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Meadowcliff Lodge & Coleville/Walker Koa compare with other water systems in Mono County?
By EPA's size categories, Meadowcliff Lodge & Coleville/Walker Koa is a very small system (500 people or fewer). Mono County has 84 active public water systems. Its population served is well below the county average of 424 people per system, and accounts for less than 0.1% of the 35,602 people reported by systems filed under the county. Across California, the 7,479 active systems average 5,706 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Meadowcliff Lodge & Coleville/Walker Koa is well below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. California has 3,016 active transient non-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 Meadowcliff Lodge & Coleville/Walker Koa?
EPA lists Meadowcliff Lodge & Coleville/Walker Koa 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. 46 of the 84 active systems in Mono County (55%) are also privately owned.
Does Meadowcliff Lodge & Coleville/Walker Koa have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in August 2010. The violations listed here began between April 1983 and August 2010. By type: 6 public notice, recordkeeping or other, 5 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 6 as resolved and 6 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1984-05-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1984-03-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-12-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-08-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-05-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1983-04-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
The 12 most recent 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.
Meadowcliff Lodge & Coleville/Walker Koa: frequently asked questions
Who runs Meadowcliff Lodge & Coleville/Walker Koa?
Meadowcliff Lodge & Coleville/Walker Koa (PWSID CA2600607) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Meadowcliff Lodge & Coleville/Walker Koa serve?
Meadowcliff Lodge & Coleville/Walker Koa reports serving 25 people through 46 service connections in Mono County, California.
Where does Meadowcliff Lodge & Coleville/Walker Koa 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 Meadowcliff Lodge & Coleville/Walker Koa have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in August 2010. 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 Meadowcliff Lodge & Coleville/Walker Koa'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in August 2010. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Meadowcliff Lodge & Coleville/Walker Koa's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Meadowcliff Lodge & Coleville/Walker Koa is a 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 Mono County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mammoth Cwd | Mono | 8,234 | Community | Surface water |
| Mammoth Mountain Ski Area - Outpost 14 | Mono | 7,736 | Non-transient non-community | Groundwater |
| June Lake PUD - Down Canyon | Mono | 2,810 | Community | Surface water |
| June Lake PUD Village | Mono | 2,763 | Community | Surface water |
| Usmc/Mtn Warfare Trng Ctr - Bridgeport | Mono | 1,200 | Community | Groundwater |
| Mammoth Lakes Basin | Mono | 1,000 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Meadowcliff Lodge & Coleville/Walker Koa, PWSID CA2600607, California”, https://aquacensus.com/water-systems/california/meadowcliff-lodge-coleville-walker-koa-ca2600607 (data as of October 1, 2026).