Public water system · WI1110344
ActiveLake Wisconsin Country Club
At a glance
Lake Wisconsin Country Club (PWSID WI1110344) is an active transient non-community water system in Columbia County, Wisconsin. It reports serving 250 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Lake Wisconsin Country Club compare with other water systems in Columbia County?
By EPA's size categories, Lake Wisconsin Country Club is a very small system (500 people or fewer). Columbia County has 140 active public water systems. Its population served is about half of the county average of 463 people per system, and accounts for 0.4% of the 64,780 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Lake Wisconsin Country Club is about 74% above 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. Wisconsin has 9,112 active transient non-community water systems, 82% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Lake Wisconsin Country Club?
EPA lists Lake Wisconsin Country Club as privately owned. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 114 of the 140 active systems in Columbia County (81%) are also privately owned.
Does Lake Wisconsin Country Club have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2024. The violations listed here began between January 2024 and January 2024. By type: 1 monitoring and 1 monitoring and reporting. The contaminants or rules involved are Revised Total Coliform Rule and Nitrate. EPA lists 2 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 |
|---|---|---|---|---|
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 2 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.
Lake Wisconsin Country Club: frequently asked questions
Who runs Lake Wisconsin Country Club?
Lake Wisconsin Country Club (PWSID WI1110344) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Lake Wisconsin Country Club serve?
Lake Wisconsin Country Club reports serving 250 people through 1 service connection in Columbia County, Wisconsin.
Where does Lake Wisconsin Country Club 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 Lake Wisconsin Country Club have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2024. 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 Lake Wisconsin Country Club'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 2 violations for this system; none is health-based, and the most recent began in January 2024. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Lake Wisconsin Country Club's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Lake Wisconsin Country Club 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 Columbia County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Portage Waterworks | Columbia | 10,437 | Community | Groundwater |
| Columbus Utilities | Columbia | 5,173 | Community | Groundwater |
| Wi Dot Rest Area 12 Dekorra West Bound | Columbia | 3,255 | Transient non-community | Groundwater |
| Wisconsin Dells Waterworks | Columbia | 3,232 | Community | Groundwater |
| Lodi Waterworks | Columbia | 3,146 | Community | Groundwater |
| Poynette Waterworks | Columbia | 2,520 | 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, “Lake Wisconsin Country Club, PWSID WI1110344, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/lake-wisconsin-country-club-wi1110344 (data as of October 1, 2026).