Lomira Waterworks
EPA ID: WI1140151 · 2,701 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Lomira Waterworks (WI1140151): 3 violations on record since 2021. While 3 violations did appear in Lomira Waterworks's monitoring record, none is listed as unresolved; the utility serves approximately 2,701 residents. A closed violation record does not by itself establish compliance with every current EPA standard.
Data: EPA SDWIS
Service Area Map
Coverage area for Lomira Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Lomira Waterworks have a median household income of $75,630 and about 14,718 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 64% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Lomira Waterworks'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
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
Lomira Waterworks (EPA ID: WI1140151) is a community water system in Wisconsin that serves approximately 2,701 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 2 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 |
|---|---|---|---|
| July 2, 2025 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Resolved |
| January 1, 2025 | TTHM | Non-health-based | Archived |
| January 1, 2025 | Total Haloacetic Acids (HAA5) | Non-health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | Monitoring & Reporting | 1 | No |
| TTHM | Monitoring & Reporting | 1 | No |
| LEAD AND COPPER RULE REVISIONS | 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 |
|---|---|---|
| 0.0082 mg/L | No | 2023-09-30 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
4 of 4 ZIP records with known zones are in EPA Radon Zone 1.
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 Lomira Waterworks (WI1140151) on EPA.gov.
Frequently Asked Questions
Is Lomira Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Lomira Waterworks; 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 Lomira Waterworks serve?
Lomira Waterworks serves approximately 2,701 people across 4 ZIP codes in Wisconsin.
Where does Lomira Waterworks get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lomira Waterworks (WI): 3 EPA Violations. https://zipcheckup.com/water-system/wi1140151/
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author = {{ZipCheckup}},
title = {{Lomira Waterworks (WI): 3 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi1140151/}
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What You Can Do
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Contact your utility
Lomira Waterworks (EPA ID: WI1140151) - request the latest Consumer Confidence Report or ask about specific contaminants.