Public water system · MN1200004
ActiveHayfield
At a glance
Hayfield (PWSID MN1200004) is an active community water system in Dodge County, Minnesota. It reports serving 1,363 people through 570 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,363
Service connections
570
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hayfield compare with other water systems in Dodge County?
By EPA's size categories, Hayfield is a small system (501 to 3,300 people). Dodge County has 27 active public water systems, and Hayfield is the 3rd-largest of them by population served. Its population served is about 144% above the county average of 558 people per system, and accounts for 9.1% of the 15,055 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 Hayfield 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 Hayfield?
EPA lists Hayfield 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. 8 of the 27 active systems in Dodge County (30%) are also owned by a local government.
Does Hayfield have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2023. The violations listed here began between October 1991 and January 2023. By type: 4 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1992-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 4 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.
Hayfield: frequently asked questions
Who runs Hayfield?
Hayfield (PWSID MN1200004) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Hayfield serve?
Hayfield reports serving 1,363 people through 570 service connections in Dodge County, Minnesota.
Where does Hayfield 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 Hayfield have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2023. 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 Hayfield'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 4 violations for this system; none is health-based, and the most recent began in January 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Hayfield's water quality report?
As a community water system, Hayfield 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 Dodge County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Kasson | Dodge | 6,850 | Community | Groundwater |
| Dodge Center | Dodge | 2,939 | Community | Groundwater |
| Mantorville | Dodge | 1,197 | Community | Groundwater |
| Claremont | Dodge | 773 | Community | Groundwater |
| West Concord | Dodge | 773 | Community | Groundwater |
| Con-Tech | Dodge | 300 | Non-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, “Hayfield, PWSID MN1200004, Minnesota”, https://aquacensus.com/water-systems/minnesota/hayfield-mn1200004 (data as of October 1, 2026).