Public water system · WI4450411
ActiveHortonville Water Utility
At a glance
Hortonville Water Utility (PWSID WI4450411) is an active community water system in Outagamie County, Wisconsin. It reports serving 3,028 people through 1,137 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,028
Service connections
1,137
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hortonville Water Utility compare with other water systems in Outagamie County?
By EPA's size categories, Hortonville Water Utility is a small system (501 to 3,300 people). Outagamie County has 107 active public water systems. Its population served is about 80% above the county average of 1,679 people per system, and accounts for 1.7% of the 179,613 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Hortonville Water Utility is about half of 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. Wisconsin has 1,053 active community water systems, 9.5% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Hortonville Water Utility?
EPA lists Hortonville Water Utility as owned by a local government. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 21 of the 107 active systems in Outagamie County (20%) are also owned by a local government.
Does Hortonville Water Utility have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2025. The violations listed here began between January 1998 and May 2025. By type: 9 monitoring and reporting, 1 monitoring, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminants or rules involved are Revised Total Coliform Rule, Lead and Copper Rule Revisions, Public Notice and Ethylbenzene. EPA lists 12 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 |
|---|---|---|---|---|
| 2025-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-10-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
The 12 most recent 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.
Hortonville Water Utility: frequently asked questions
Who runs Hortonville Water Utility?
Hortonville Water Utility (PWSID WI4450411) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Hortonville Water Utility serve?
Hortonville Water Utility reports serving 3,028 people through 1,137 service connections in Outagamie County, Wisconsin.
Where does Hortonville Water Utility 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 Hortonville Water Utility have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2025. 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 Hortonville Water Utility'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Hortonville Water Utility's water quality report?
As a community water system, Hortonville Water Utility 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 Outagamie County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Appleton Waterworks | Outagamie | 74,511 | Community | Surface water |
| Grand Chute Tn San Dist 1 | Outagamie | 21,583 | Community | Purchased surface water |
| Kaukauna Utilities | Outagamie | 17,493 | Community | Groundwater |
| Darboy Sanitary Dist 1 | Outagamie | 13,024 | Community | Groundwater |
| Little Chute Waterworks | Outagamie | 12,168 | Community | Groundwater |
| Greenville Utilities Vil of | Outagamie | 11,340 | 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, “Hortonville Water Utility, PWSID WI4450411, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/hortonville-water-utility-wi4450411 (data as of October 1, 2026).