Public water system · MN1270021
ActiveMaple Plain
At a glance
Maple Plain (PWSID MN1270021) is an active community water system in Hennepin County, Minnesota. It reports serving 2,174 people through 666 service connections. 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; 1 is health-based, and the most recent began in February 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,174
Service connections
666
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Maple Plain compare with other water systems in Hennepin County?
By EPA's size categories, Maple Plain is a small system (501 to 3,300 people). Hennepin County has 198 active public water systems. Its population served is about 66% below the county average of 6,444 people per system, and accounts for 0.2% of the 1,275,854 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 Plain 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 Plain?
EPA lists Maple Plain 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. 86 of the 198 active systems in Hennepin County (43%) are also owned by a local government.
Does Maple Plain have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in February 2013. The violations listed here began between November 1991 and February 2013. By type: 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminants or rules involved are Combined Radium (-226 and -228) and Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 2013-02-12 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1991-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Maple Plain: frequently asked questions
Who runs Maple Plain?
Maple Plain (PWSID MN1270021) 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 Plain serve?
Maple Plain reports serving 2,174 people through 666 service connections in Hennepin County, Minnesota.
Where does Maple Plain 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 Plain have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in February 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 Maple Plain'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; 1 is health-based, and the most recent began in February 2013. 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 Plain's water quality report?
As a community water system, Maple Plain 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 Hennepin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Minneapolis | Hennepin | 425,300 | Community | Surface water |
| Bloomington | Hennepin | 91,300 | Community | Purchased surface water |
| Brooklyn Park | Hennepin | 89,995 | Community | Groundwater |
| Maple Grove | Hennepin | 82,000 | Community | Groundwater |
| Plymouth | Hennepin | 76,546 | Community | Groundwater |
| Eden Prairie | Hennepin | 63,726 | 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 Plain, PWSID MN1270021, Minnesota”, https://aquacensus.com/water-systems/minnesota/maple-plain-mn1270021 (data as of October 1, 2026).