Public water system · CA2600641
ActiveWalker Country Store B.C.D.C.
At a glance
Walker Country Store B.C.D.C. (PWSID CA2600641) is an active transient non-community water system in Mono County, California. It reports serving 25 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in April 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Walker Country Store B.C.D.C. compare with other water systems in Mono County?
By EPA's size categories, Walker Country Store B.C.D.C. 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 Walker Country Store B.C.D.C. 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 Walker Country Store B.C.D.C.?
EPA lists Walker Country Store B.C.D.C. 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 Walker Country Store B.C.D.C. have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in April 2021. By type: 1 monitoring. The contaminant or rule involved is Revised Total Coliform Rule. EPA lists 1 as archived. 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 |
|---|---|---|---|---|
| 2021-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
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.
Walker Country Store B.C.D.C.: frequently asked questions
Who runs Walker Country Store B.C.D.C.?
Walker Country Store B.C.D.C. (PWSID CA2600641) is a transient non-community water system privately owned. It is regulated by the CA state drinking water program.
How many people does Walker Country Store B.C.D.C. serve?
Walker Country Store B.C.D.C. reports serving 25 people through 2 service connections in Mono County, California.
Where does Walker Country Store B.C.D.C. 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 Walker Country Store B.C.D.C. have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in April 2021. 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 Walker Country Store B.C.D.C.'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 not health-based, and the most recent began in April 2021. For current results, consult EPA ECHO, or the CA state drinking water program.
Where can I find Walker Country Store B.C.D.C.'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Walker Country Store B.C.D.C. 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, “Walker Country Store B.C.D.C., PWSID CA2600641, California”, https://aquacensus.com/water-systems/california/walker-country-store-b-c-d-c-ca2600641 (data as of October 1, 2026).