Public water system · WI8040580
ActiveMoon Lake Park
At a glance
Moon Lake Park (PWSID WI8040580) is an active transient non-community water system in Bayfield County, Wisconsin. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 1995.
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 Moon Lake Park compare with other water systems in Bayfield County?
By EPA's size categories, Moon Lake Park is a very small system (500 people or fewer). Bayfield County has 194 active public water systems. Its population served is about half of the county average of 55 people per system, and accounts for 0.2% of the 10,732 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 Moon Lake 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 Moon Lake Park?
EPA lists Moon Lake Park 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. 153 of the 194 active systems in Bayfield County (79%) are also privately owned.
Does Moon Lake Park have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 1995. The violations listed here began between June 1995 and July 1995. By type: 3 monitoring and reporting. The contaminants or rules involved are Nitrate, Nitrite and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 1995-07-14 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-07-14 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1995-06-14 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Moon Lake Park: frequently asked questions
Who runs Moon Lake Park?
Moon Lake Park (PWSID WI8040580) is a transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Moon Lake Park serve?
Moon Lake Park reports serving 25 people through 1 service connection in Bayfield County, Wisconsin.
Where does Moon Lake 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 Moon Lake Park have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 1995. 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 Moon Lake 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 3 violations for this system; none is health-based, and the most recent began in July 1995. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Moon Lake Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Moon Lake 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 Bayfield County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washburn Waterworks | Bayfield | 2,280 | Community | Groundwater |
| Iron River Sanitary District | Bayfield | 600 | Community | Groundwater |
| Drummond Sanitary District | Bayfield | 500 | Community | Groundwater |
| Bayfield Waterworks | Bayfield | 488 | Community | Groundwater |
| Port Wing Sanitary District | Bayfield | 400 | Community | Groundwater |
| Mount Ashwabay | Bayfield | 220 | 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, “Moon Lake Park, PWSID WI8040580, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/moon-lake-park-wi8040580 (data as of October 1, 2026).