Public water system · WI7500288
ActiveSunset Lake Co Park
At a glance
Sunset Lake Co Park (PWSID WI7500288) is an active transient non-community water system in Portage County, Wisconsin. It reports serving 25 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 2 violations for this system; none is health-based, and the most recent began in October 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Sunset Lake Co Park compare with other water systems in Portage County?
By EPA's size categories, Sunset Lake Co Park 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 Sunset Lake Co Park 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 Sunset Lake Co Park?
EPA lists Sunset Lake Co Park 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 Sunset Lake Co Park have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 1994. The violations listed here began between July 1994 and October 1994. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 1994-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 2 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.
Sunset Lake Co Park: frequently asked questions
Who runs Sunset Lake Co Park?
Sunset Lake Co Park (PWSID WI7500288) 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 Sunset Lake Co Park serve?
Sunset Lake Co Park reports serving 25 people through 1 service connection in Portage County, Wisconsin.
Where does Sunset Lake Co Park 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 Sunset Lake Co Park have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 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 Sunset Lake Co Park'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 2 violations for this system; none is health-based, and the most recent began in October 1994. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Sunset Lake Co Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Sunset Lake Co Park 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, “Sunset Lake Co Park, PWSID WI7500288, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/sunset-lake-co-park-wi7500288 (data as of October 1, 2026).