Public water system · MN1550001
ActiveByron
At a glance
Byron (PWSID MN1550001) is an active community water system in Olmsted County, Minnesota. It reports serving 6,809 people through 2,555 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,809
Service connections
2,555
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Byron compare with other water systems in Olmsted County?
By EPA's size categories, Byron is a medium system (3,301 to 10,000 people). Olmsted County has 81 active public water systems, and Byron is the 3rd-largest of them by population served. Its population served is about 3.8 times the county average of 1,816 people per system, and accounts for 4.6% of the 147,054 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 Byron is roughly in line with 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 Byron?
EPA lists Byron 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 81 active systems in Olmsted County (11%) are also owned by a local government.
Does Byron have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2015. The violations listed here began between November 1992 and January 2015. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as archived and 1 as resolved. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2015-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1997-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 3 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.
Byron: frequently asked questions
Who runs Byron?
Byron (PWSID MN1550001) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Byron serve?
Byron reports serving 6,809 people through 2,555 service connections in Olmsted County, Minnesota.
Where does Byron 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 Byron have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2015. 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 Byron'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 3 violations for this system; none is health-based, and the most recent began in January 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Byron's water quality report?
As a community water system, Byron 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 Olmsted County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rochester | Olmsted | 123,624 | Community | Groundwater |
| Stewartville | Olmsted | 6,850 | Community | Groundwater |
| Eyota | Olmsted | 2,043 | Community | Groundwater |
| Oronoco | Olmsted | 2,040 | Community | Groundwater |
| Dover | Olmsted | 792 | Community | Groundwater |
| Crosswinds Church | Olmsted | 400 | 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, “Byron, PWSID MN1550001, Minnesota”, https://aquacensus.com/water-systems/minnesota/byron-mn1550001 (data as of October 1, 2026).