Public water system · MN1850009
ActiveSaint Charles
At a glance
Saint Charles (PWSID MN1850009) is an active community water system in Winona County, Minnesota. It reports serving 3,825 people through 1,647 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in March 1991.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,825
Service connections
1,647
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Saint Charles compare with other water systems in Winona County?
By EPA's size categories, Saint Charles is a medium system (3,301 to 10,000 people). Winona County has 77 active public water systems, and Saint Charles is the 3rd-largest of them by population served. Its population served is about 5.7 times the county average of 666 people per system, and accounts for 7.5% of the 51,279 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 Saint Charles is about 43% 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 Saint Charles?
EPA lists Saint Charles 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. 13 of the 77 active systems in Winona County (17%) are also owned by a local government.
Does Saint Charles have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in March 1991. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as archived. 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 |
|---|---|---|---|---|
| 1991-03-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
The one violation in EPA's records.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.
Saint Charles: frequently asked questions
Who runs Saint Charles?
Saint Charles (PWSID MN1850009) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Saint Charles serve?
Saint Charles reports serving 3,825 people through 1,647 service connections in Winona County, Minnesota.
Where does Saint Charles 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 Saint Charles have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in March 1991. 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 Saint Charles' 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 one violation for this system; it is not health-based, and the most recent began in March 1991. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Saint Charles' water quality report?
As a community water system, Saint Charles 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 Winona County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Winona | Winona | 27,782 | Community | Groundwater |
| Goodview | Winona | 4,158 | Community | Groundwater |
| Kwik Trip No. 497 | Winona | 1,600 | Transient non-community | Groundwater |
| Lewiston | Winona | 1,512 | Community | Groundwater |
| Enterprise Rest Area Mndot | Winona | 1,220 | Transient non-community | Groundwater |
| Dresbach Information Center Mndot | Winona | 1,058 | 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, “Saint Charles, PWSID MN1850009, Minnesota”, https://aquacensus.com/water-systems/minnesota/saint-charles-mn1850009 (data as of October 1, 2026).