Public water system · WI1280282
ActiveLake Mills Travel Plaza
At a glance
Lake Mills Travel Plaza (PWSID WI1280282) is an active transient non-community water system in Jefferson County, Wisconsin. It reports serving 662 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in March 1991.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
662
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Lake Mills Travel Plaza compare with other water systems in Jefferson County?
By EPA's size categories, Lake Mills Travel Plaza is a small system (501 to 3,300 people). Jefferson County has 195 active public water systems. Its population served is about 46% above the county average of 453 people per system, and accounts for 0.7% of the 88,343 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 Mills Travel Plaza is about 4.6 times 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 Mills Travel Plaza?
EPA lists Lake Mills Travel Plaza 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. 152 of the 195 active systems in Jefferson County (78%) are also privately owned.
Does Lake Mills Travel Plaza have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in March 1991. The violations listed here began between January 1991 and March 1991. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 1991-03-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 3 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 Mills Travel Plaza: frequently asked questions
Who runs Lake Mills Travel Plaza?
Lake Mills Travel Plaza (PWSID WI1280282) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Lake Mills Travel Plaza serve?
Lake Mills Travel Plaza reports serving 662 people through 1 service connection in Jefferson County, Wisconsin.
Where does Lake Mills Travel Plaza 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 Mills Travel Plaza have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in March 1991. 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 Mills Travel Plaza'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 3 violations for this system; none is health-based, and the most recent began in March 1991. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Lake Mills Travel Plaza's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Lake Mills Travel Plaza 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Watertown Waterworks | Jefferson | 23,945 | Community | Groundwater |
| Fort Atkinson Waterworks | Jefferson | 12,390 | Community | Groundwater |
| Jefferson Waterworks | Jefferson | 7,926 | Community | Groundwater |
| Lake Mills Waterworks | Jefferson | 6,211 | Community | Groundwater |
| Waterloo Waterworks | Jefferson | 3,520 | Community | Groundwater |
| Johnson Creek Waterworks | Jefferson | 3,318 | 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 Mills Travel Plaza, PWSID WI1280282, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/lake-mills-travel-plaza-wi1280282 (data as of October 1, 2026).