Public water system · WI4240223
ActiveGreen Lake MHP
At a glance
Green Lake MHP (PWSID WI4240223) is an active community water system in Green Lake County, Wisconsin. It reports serving 70 people through 34 service connections. 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 January 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
34
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Green Lake MHP compare with other water systems in Green Lake County?
By EPA's size categories, Green Lake MHP is a very small system (500 people or fewer). Green Lake County has 70 active public water systems. Its population served is well below the county average of 211 people per system, and accounts for 0.5% of the 14,772 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Green Lake MHP is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wisconsin has 1,053 active community water systems, 9.5% 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 Green Lake MHP?
EPA lists Green Lake MHP 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. 63 of the 70 active systems in Green Lake County (90%) are also privately owned.
Does Green Lake MHP have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2013. The violations listed here began between October 1997 and January 2013. By type: 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule, Consumer Confidence Rule 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 |
|---|---|---|---|---|
| 2013-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2000-01-19 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1997-10-01 | 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.
Green Lake MHP: frequently asked questions
Who runs Green Lake MHP?
Green Lake MHP (PWSID WI4240223) is a community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Green Lake MHP serve?
Green Lake MHP reports serving 70 people through 34 service connections in Green Lake County, Wisconsin.
Where does Green Lake MHP 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 Green Lake MHP have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2013. 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 Green Lake MHP'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 January 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Green Lake MHP's water quality report?
As a community water system, Green Lake MHP must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Green Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Berlin Waterworks | Green Lake | 5,524 | Community | Groundwater |
| Markesan Waterworks | Green Lake | 1,365 | Community | Groundwater |
| Princeton Waterworks | Green Lake | 1,166 | Community | Groundwater |
| Green Lake Waterworks | Green Lake | 1,002 | Community | Groundwater |
| Amer Baptist Assem Main | Green Lake | 640 | Non-transient non-community | Groundwater |
| Walkers Bar & Grill | Green Lake | 302 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Green Lake MHP, PWSID WI4240223, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/green-lake-mhp-wi4240223 (data as of October 1, 2026).