Public water system · WI1140348
ActiveMarsh Inn
At a glance
Marsh Inn (PWSID WI1140348) is an active transient non-community water system in Dodge County, Wisconsin. It reports serving 127 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
127
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Marsh Inn compare with other water systems in Dodge County?
By EPA's size categories, Marsh Inn is a very small system (500 people or fewer). Dodge County has 180 active public water systems. Its population served is well below the county average of 408 people per system, and accounts for 0.2% of the 73,453 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 Marsh Inn is about 12% 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 Marsh Inn?
EPA lists Marsh Inn 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. 134 of the 180 active systems in Dodge County (74%) are also privately owned.
Does Marsh Inn have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2011. The violations listed here began between December 1994 and May 2011. By type: 1 public notice, recordkeeping or other, 1 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2011-05-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2011-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
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.
Marsh Inn: frequently asked questions
Who runs Marsh Inn?
Marsh Inn (PWSID WI1140348) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Marsh Inn serve?
Marsh Inn reports serving 127 people through 3 service connections in Dodge County, Wisconsin.
Where does Marsh Inn 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 Marsh Inn have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2011. 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 Marsh Inn'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; 1 is health-based, and the most recent began in May 2011. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Marsh Inn's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Marsh Inn 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 Dodge County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Beaver Dam Water Utility | Dodge | 16,200 | Community | Groundwater |
| Waupun Utilities | Dodge | 8,056 | Community | Groundwater |
| Mayville Waterworks | Dodge | 5,112 | Community | Groundwater |
| Waupun Correctional Inst | Dodge | 3,706 | Community | Groundwater |
| Horicon Waterworks | Dodge | 3,682 | Community | Groundwater |
| Lomira Waterworks | Dodge | 2,701 | 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, “Marsh Inn, PWSID WI1140348, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/marsh-inn-wi1140348 (data as of October 1, 2026).