Public water system · WI1541334
ActiveBig Hill Center
At a glance
Big Hill Center (PWSID WI1541334) is an active transient non-community water system in Rock County, Wisconsin. It reports serving 53 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
53
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Big Hill Center compare with other water systems in Rock County?
By EPA's size categories, Big Hill Center is a very small system (500 people or fewer). Rock County has 156 active public water systems. Its population served is well below the county average of 952 people per system, and accounts for less than 0.1% of the 148,563 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 Big Hill Center is about 63% 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 Big Hill Center?
EPA lists Big Hill Center 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. 126 of the 156 active systems in Rock County (81%) are also privately owned.
Does Big Hill Center have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Big Hill Center. For the latest compliance status, check EPA ECHO for current compliance history.
Big Hill Center: frequently asked questions
Who runs Big Hill Center?
Big Hill Center (PWSID WI1541334) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Big Hill Center serve?
Big Hill Center reports serving 53 people through 1 service connection in Rock County, Wisconsin.
Where does Big Hill Center 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 Big Hill Center have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Big Hill Center'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 Safe Drinking Water Act records list no violations for this system. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Big Hill Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Big Hill Center 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 Rock County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Janesville Water Utility | Rock | 64,415 | Community | Groundwater |
| Beloit City of | Rock | 36,677 | Community | Groundwater |
| Evansville Waterworks | Rock | 5,703 | Community | Groundwater |
| Milton Waterworks | Rock | 5,588 | Community | Groundwater |
| Edgerton Waterworks | Rock | 5,512 | Community | Groundwater |
| Wi Dot Rest Area 22 Turtle | Rock | 3,005 | Transient non-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, “Big Hill Center, PWSID WI1541334, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/big-hill-center-wi1541334 (data as of October 1, 2026).