Hortonville Water Utility
EPA ID: WI4450411 · 3,028 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Hortonville Water Utility (WI4450411): 1 health-based violation recorded since 2021. Although 3 violations appeared on Hortonville Water Utility's record, each is listed as resolved; the system serves about 3,028 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Hortonville Water Utility Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Hortonville Water Utility have a median household income of $76,705 and about 27,244 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Hortonville Water Utility's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 1 detection recorded.
Comparable Water Systems
Similar-sized systems in Wisconsin
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Hortonville Water Utility (EPA ID: WI4450411) is a community water system in Wisconsin that serves approximately 3,028 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| May 1, 2025 | Revised Total Coliform Rule | Non-health-based | Resolved |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| October 17, 2024 | Public Notice | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | Treatment Technique | 1 | Yes |
| Public Notice | Other (notice or report rule) | 1 | No |
| Revised Total Coliform Rule | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0027 mg/L | No | 2025-12-31 |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
Radon Risk in Service Area
1 of 3 ZIP records with known zones is in EPA Radon Zone 1. 2 of 3 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by WI or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Hortonville Water Utility (WI4450411) on EPA.gov.
Frequently Asked Questions
Is Hortonville Water Utility water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Hortonville Water Utility; its 3 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Hortonville Water Utility serve?
Hortonville Water Utility serves approximately 3,028 people across 3 ZIP codes in Wisconsin.
Where does Hortonville Water Utility get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Hortonville Water Utility (WI): 1 Health Violation. https://zipcheckup.com/water-system/wi4450411/
@misc{zipcheckup-water-system-wi4450411,
author = {{ZipCheckup}},
title = {{Hortonville Water Utility (WI): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi4450411/}
}
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Hortonville Water Utility (EPA ID: WI4450411) - request the latest Consumer Confidence Report or ask about specific contaminants.