Public water system · MN1530008
ActiveRound Lake
At a glance
Round Lake (PWSID MN1530008) is an active community water system in Nobles County, Minnesota. It reports serving 376 people through 207 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
376
Service connections
207
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Round Lake compare with other water systems in Nobles County?
By EPA's size categories, Round Lake is a very small system (500 people or fewer). Nobles County has 15 active public water systems, and Round Lake is the 5th-largest of them by population served. Its population served is well below the county average of 1,220 people per system, and accounts for 2.1% of the 18,302 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 Round 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 89 Minnesota systems (1.4%) list purchased groundwater as their primary source.
Who owns and regulates Round Lake?
EPA lists Round 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. 12 of the 15 active systems in Nobles County (80%) are also owned by a local government.
Does Round Lake have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 1994. The violations listed here began between April 1993 and January 1994. By type: 2 monitoring and reporting. The contaminants or rules involved are Nitrate and Total coliform bacteria (TCR). EPA lists 2 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 |
|---|---|---|---|---|
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1993-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | 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.
Round Lake: frequently asked questions
Who runs Round Lake?
Round Lake (PWSID MN1530008) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Round Lake serve?
Round Lake reports serving 376 people through 207 service connections in Nobles County, Minnesota.
Where does Round Lake get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Round Lake have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 1994. 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 Round 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 2 violations for this system; none is health-based, and the most recent began in January 1994. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Round Lake's water quality report?
As a community water system, Round 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 Nobles County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Worthington | Nobles | 14,052 | Community | Purchased surface water |
| Adrian | Nobles | 1,211 | Community | Groundwater |
| Brewster | Nobles | 506 | Community | Purchased groundwater |
| Ellsworth | Nobles | 462 | Community | Purchased surface water |
| Wilmont | Nobles | 344 | Community | Purchased groundwater |
| Rushmore | Nobles | 342 | Community | Purchased surface water |
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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, “Round Lake, PWSID MN1530008, Minnesota”, https://aquacensus.com/water-systems/minnesota/round-lake-mn1530008 (data as of October 1, 2026).