Public water system · WI1330101
ActiveYellowstone Lake Chalet
At a glance
Yellowstone Lake Chalet (PWSID WI1330101) is an active transient non-community water system in Lafayette County, Wisconsin. It reports serving 104 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in March 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
104
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Yellowstone Lake Chalet compare with other water systems in Lafayette County?
By EPA's size categories, Yellowstone Lake Chalet is a very small system (500 people or fewer). Lafayette County has 39 active public water systems. Its population served is about 63% below the county average of 284 people per system, and accounts for 0.9% of the 11,066 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 Yellowstone Lake Chalet is about 28% 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. 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 Yellowstone Lake Chalet?
EPA lists Yellowstone Lake Chalet 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. 22 of the 39 active systems in Lafayette County (56%) are also privately owned.
Does Yellowstone Lake Chalet have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in March 2017. The violations listed here began between June 1995 and March 2017. By type: 1 monitoring, 1 required treatment not met, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2017-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-05-30 | Required treatment not metTreatment Technique, Corrective/Expedited Actions (RTCR) · code 2C | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 1995-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 4 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.
Yellowstone Lake Chalet: frequently asked questions
Who runs Yellowstone Lake Chalet?
Yellowstone Lake Chalet (PWSID WI1330101) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Yellowstone Lake Chalet serve?
Yellowstone Lake Chalet reports serving 104 people through 1 service connection in Lafayette County, Wisconsin.
Where does Yellowstone Lake Chalet 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 Yellowstone Lake Chalet have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in March 2017. 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 Yellowstone Lake Chalet'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 4 violations for this system; 2 are health-based, and the most recent began in March 2017. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Yellowstone Lake Chalet's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Yellowstone Lake Chalet 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 Lafayette County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Darlington Waterworks | Lafayette | 2,235 | Community | Groundwater |
| Shullsburg Waterworks | Lafayette | 1,222 | Community | Groundwater |
| Belmont Waterworks | Lafayette | 991 | Community | Groundwater |
| Benton Waterworks | Lafayette | 976 | Community | Groundwater |
| Argyle Waterworks | Lafayette | 823 | Community | Groundwater |
| Blanchardville Waterworks | Lafayette | 810 | 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, “Yellowstone Lake Chalet, PWSID WI1330101, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/yellowstone-lake-chalet-wi1330101 (data as of October 1, 2026).