Public water system · IL3137935
ActiveSupermart Shell
At a glance
Supermart Shell (PWSID IL3137935) is an active transient non-community water system in Lake County, Wisconsin. It reports serving 500 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
500
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Supermart Shell compare with other water systems in Lake County?
By EPA's size categories, Supermart Shell is a very small system (500 people or fewer). Lake County has 3 active public water systems, and Supermart Shell is the 2nd-largest of them by population served. Its population served is roughly in line with the county average of 517 people per system, and accounts for 32% of the 1,550 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 Supermart Shell is about 3.5 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 Supermart Shell?
EPA lists Supermart Shell as privately owned. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 3 active systems in Lake County (67%) are also privately owned.
Does Supermart Shell 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 Supermart Shell. For the latest compliance status, check EPA ECHO for current compliance history.
Supermart Shell: frequently asked questions
Who runs Supermart Shell?
Supermart Shell (PWSID IL3137935) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Supermart Shell serve?
Supermart Shell reports serving 500 people through 1 service connection in Lake County, Wisconsin.
Where does Supermart Shell 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 Supermart Shell have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Supermart Shell'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 IL state drinking water program.
Where can I find Supermart Shell's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Supermart Shell 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 Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Millburn School Dist #24 | Lake | 650 | Non-transient non-community | Groundwater |
| Millburn School | Lake | 400 | Non-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, “Supermart Shell, PWSID IL3137935, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/supermart-shell-il3137935 (data as of October 1, 2026).