Public water system · WI1281049
ActiveCasserly Properties
At a glance
Casserly Properties (PWSID WI1281049) is an active transient non-community water system in Jefferson County, Wisconsin. It reports serving 73 people through 1 service connection. 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 September 1997.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
73
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Casserly Properties compare with other water systems in Jefferson County?
By EPA's size categories, Casserly Properties is a very small system (500 people or fewer). Jefferson County has 195 active public water systems. Its population served is well below the county average of 453 people per system, and accounts for less than 0.1% 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 Casserly Properties is about half of 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 Casserly Properties?
EPA lists Casserly Properties 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 Casserly Properties have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in September 1997. By type: 1 monitoring and reporting. The contaminant or rule involved is Nitrite. EPA lists 1 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 |
|---|---|---|---|---|
| 1997-09-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
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.
Casserly Properties: frequently asked questions
Who runs Casserly Properties?
Casserly Properties (PWSID WI1281049) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Casserly Properties serve?
Casserly Properties reports serving 73 people through 1 service connection in Jefferson County, Wisconsin.
Where does Casserly Properties 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 Casserly Properties 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 September 1997. 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 Casserly Properties' 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 September 1997. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Casserly Properties' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Casserly Properties 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, “Casserly Properties, PWSID WI1281049, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/casserly-properties-wi1281049 (data as of October 1, 2026).