Public water system · WI6560919
ActiveDeer Park Library
At a glance
Deer Park Library (PWSID WI6560919) is an active transient non-community water system in St. Croix County, Wisconsin. It reports serving 50 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
50
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Deer Park Library compare with other water systems in St. Croix County?
By EPA's size categories, Deer Park Library is a very small system (500 people or fewer). St. Croix County has 165 active public water systems. Its population served is well below the county average of 349 people per system, and accounts for less than 0.1% of the 57,590 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 Deer Park Library is about 65% 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 Deer Park Library?
EPA lists Deer Park Library 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. 132 of the 165 active systems in St. Croix County (80%) are also privately owned.
Does Deer Park Library 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 Deer Park Library. For the latest compliance status, check EPA ECHO for current compliance history.
Deer Park Library: frequently asked questions
Who runs Deer Park Library?
Deer Park Library (PWSID WI6560919) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Deer Park Library serve?
Deer Park Library reports serving 50 people through 1 service connection in St. Croix County, Wisconsin.
Where does Deer Park Library 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 Deer Park Library have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Deer Park Library'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 Deer Park Library's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Deer Park Library 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 St. Croix County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hudson Waterworks | St. Croix | 18,558 | Community | Groundwater |
| New Richmond Waterworks | St. Croix | 10,824 | Community | Groundwater |
| Baldwin Waterworks | St. Croix | 4,440 | Community | Groundwater |
| Somerset Waterworks | St. Croix | 3,334 | Community | Groundwater |
| Hammond Waterworks | St. Croix | 1,884 | Community | Groundwater |
| Roberts Waterworks | St. Croix | 1,872 | 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, “Deer Park Library, PWSID WI6560919, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/deer-park-library-wi6560919 (data as of October 1, 2026).