Public water system · WI1280508
ActiveServal USA
At a glance
Serval USA (PWSID WI1280508) is an active transient non-community water system in Jefferson County, Wisconsin. It reports serving 29 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; 2 are health-based, and the most recent began in August 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
29
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Serval USA compare with other water systems in Jefferson County?
By EPA's size categories, Serval USA 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 Serval USA is well 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 Serval USA?
EPA lists Serval USA 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 Serval USA have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in August 1994. The violations listed here began between July 1994 and August 1994. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 1994-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-07-01 | 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.
Serval USA: frequently asked questions
Who runs Serval USA?
Serval USA (PWSID WI1280508) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Serval USA serve?
Serval USA reports serving 29 people through 1 service connection in Jefferson County, Wisconsin.
Where does Serval USA 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 Serval USA have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in August 1994. 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 Serval USA'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; 2 are health-based, and the most recent began in August 1994. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Serval USA's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Serval USA 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, “Serval USA, PWSID WI1280508, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/serval-usa-wi1280508 (data as of October 1, 2026).