Public water system · MN1860011
ActiveMaple Lake
At a glance
Maple Lake (PWSID MN1860011) is an active community water system in Wright County, Minnesota. It reports serving 2,215 people through 821 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in September 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,215
Service connections
821
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Maple Lake compare with other water systems in Wright County?
By EPA's size categories, Maple Lake is a small system (501 to 3,300 people). Wright County has 126 active public water systems. Its population served is about twice the county average of 1,027 people per system, and accounts for 1.7% of the 129,374 people reported by systems filed under the county. Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active community water system reports serving 6,703 people, so Maple Lake 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. Minnesota has 987 active community water systems, 15% of the state's 6,465 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,261 Minnesota systems (97%) list groundwater as their primary source.
Who owns and regulates Maple Lake?
EPA lists Maple Lake as owned by a local government. The MN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 26 of the 126 active systems in Wright County (21%) are also owned by a local government.
Does Maple Lake have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in September 2005. The violations listed here began between October 1991 and September 2005. By type: 3 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2005-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 4 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.
Maple Lake: frequently asked questions
Who runs Maple Lake?
Maple Lake (PWSID MN1860011) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Maple Lake serve?
Maple Lake reports serving 2,215 people through 821 service connections in Wright County, Minnesota.
Where does Maple Lake 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 Maple Lake have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in September 2005. 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 Maple Lake'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 4 violations for this system; 1 is health-based, and the most recent began in September 2005. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Maple Lake's water quality report?
As a community water system, Maple Lake 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 Wright County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Joint Powers Water Board | Wright | 30,922 | Community | Groundwater |
| Otsego | Wright | 19,000 | Community | Groundwater |
| Buffalo | Wright | 16,711 | Community | Groundwater |
| Monticello | Wright | 15,087 | Community | Groundwater |
| Delano Municipal Utilities | Wright | 6,564 | Community | Groundwater |
| Rockford | Wright | 4,863 | 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, “Maple Lake, PWSID MN1860011, Minnesota”, https://aquacensus.com/water-systems/minnesota/maple-lake-mn1860011 (data as of October 1, 2026).