Public water system · MN1560016
ActiveHenning
At a glance
Henning (PWSID MN1560016) is an active community water system in Otter Tail County, Minnesota. It reports serving 851 people through 366 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
851
Service connections
366
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Henning compare with other water systems in Otter Tail County?
By EPA's size categories, Henning is a small system (501 to 3,300 people). Otter Tail County has 270 active public water systems. Its population served is about 5.2 times the county average of 164 people per system, and accounts for 1.9% of the 44,181 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 Henning 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 Henning?
EPA lists Henning 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. 27 of the 270 active systems in Otter Tail County (10%) are also owned by a local government.
Does Henning have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2022. The violations listed here began between October 2001 and July 2022. By type: 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminants or rules involved are Consumer Confidence Rule and Total coliform bacteria (TCR). EPA lists 2 as resolved. 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 |
|---|---|---|---|---|
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
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.
Henning: frequently asked questions
Who runs Henning?
Henning (PWSID MN1560016) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Henning serve?
Henning reports serving 851 people through 366 service connections in Otter Tail County, Minnesota.
Where does Henning 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 Henning have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in July 2022. 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 Henning'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; 1 is health-based, and the most recent began in July 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Henning's water quality report?
As a community water system, Henning 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 Otter Tail County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fergus Falls | Otter Tail | 14,194 | Community | Surface water |
| Perham | Otter Tail | 3,421 | Community | Groundwater |
| Pelican Rapids | Otter Tail | 2,577 | Community | Groundwater |
| New York Mills | Otter Tail | 1,287 | Community | Groundwater |
| Parkers Prairie | Otter Tail | 1,023 | Community | Groundwater |
| Battle Lake | Otter Tail | 918 | 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, “Henning, PWSID MN1560016, Minnesota”, https://aquacensus.com/water-systems/minnesota/henning-mn1560016 (data as of October 1, 2026).