Public water system · WI7501200
ActiveRosholt Branch Library
At a glance
Rosholt Branch Library (PWSID WI7501200) is an active transient non-community water system in Portage County, Wisconsin. It reports serving 30 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is health-based, and the most recent began in June 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
30
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Rosholt Branch Library compare with other water systems in Portage County?
By EPA's size categories, Rosholt Branch Library is a very small system (500 people or fewer). Portage County has 148 active public water systems. Its population served is well below the county average of 340 people per system, and accounts for less than 0.1% of the 50,348 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 Rosholt Branch Library 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 Rosholt Branch Library?
EPA lists Rosholt Branch Library as owned by a local government. 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. 32 of the 148 active systems in Portage County (22%) are also owned by a local government.
Does Rosholt Branch Library have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in June 2018. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Revised Total Coliform Rule. 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 |
|---|---|---|---|---|
| 2018-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | 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.
Rosholt Branch Library: frequently asked questions
Who runs Rosholt Branch Library?
Rosholt Branch Library (PWSID WI7501200) is a transient non-community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Rosholt Branch Library serve?
Rosholt Branch Library reports serving 30 people through 1 service connection in Portage County, Wisconsin.
Where does Rosholt Branch 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 Rosholt Branch Library have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in June 2018. 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 Rosholt Branch 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 records list one violation for this system; it is health-based, and the most recent began in June 2018. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Rosholt Branch Library's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rosholt Branch 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 Portage County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Stevens Point Waterworks | Portage | 26,717 | Community | Groundwater |
| Plover Waterworks | Portage | 13,486 | Community | Groundwater |
| Whiting Waterworks | Portage | 1,743 | Community | Groundwater |
| Amherst Waterworks | Portage | 1,119 | Community | Groundwater |
| Mccain Foods USA | Portage | 450 | Non-transient non-community | Groundwater |
| Almond-Bancroft Public Schools | Portage | 420 | 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, “Rosholt Branch Library, PWSID WI7501200, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/rosholt-branch-library-wi7501200 (data as of October 1, 2026).