Public water system · MN1870004
ActiveGranite Falls
At a glance
Granite Falls (PWSID MN1870004) is an active community water system in Yellow Medicine County, Minnesota. It reports serving 2,843 people through 1,219 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 April 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,843
Service connections
1,219
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Granite Falls compare with other water systems in Yellow Medicine County?
By EPA's size categories, Granite Falls is a small system (501 to 3,300 people). Yellow Medicine County has 13 active public water systems, and Granite Falls is the largest of them by population served. Its population served is about 5.3 times the county average of 536 people per system, and accounts for 41% of the 6,968 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 Granite Falls is about 58% 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 Granite Falls?
EPA lists Granite Falls 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. 9 of the 13 active systems in Yellow Medicine County (69%) are also owned by a local government.
Does Granite Falls have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in April 1996. 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 |
|---|---|---|---|---|
| 1996-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | 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.
Granite Falls: frequently asked questions
Who runs Granite Falls?
Granite Falls (PWSID MN1870004) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Granite Falls serve?
Granite Falls reports serving 2,843 people through 1,219 service connections in Yellow Medicine County, Minnesota.
Where does Granite Falls 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 Granite Falls 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 April 1996. 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 Granite Falls' 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 April 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Granite Falls' water quality report?
As a community water system, Granite Falls 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 Yellow Medicine County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Canby | Yellow Medicine | 1,769 | Community | Groundwater |
| Clarkfield | Yellow Medicine | 841 | Community | Groundwater |
| Wood Lake | Yellow Medicine | 423 | Community | Groundwater |
| Hanley Falls | Yellow Medicine | 275 | Community | Groundwater |
| Echo | Yellow Medicine | 269 | Community | Purchased groundwater |
| Porter | Yellow Medicine | 180 | Community | Purchased 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, “Granite Falls, PWSID MN1870004, Minnesota”, https://aquacensus.com/water-systems/minnesota/granite-falls-mn1870004 (data as of October 1, 2026).