Antigo Waterworks
EPA ID: WI7340086 · 7,780 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Antigo Waterworks (WI7340086): 2 violations recorded with unresolved status in the SDWIS data used. Marked active and unresolved in the EPA record: 2 violations at Antigo Waterworks, whose service population is approximately 7,780 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Antigo Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Antigo Waterworks have a median household income of $55,340 and about 12,757 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 71% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 33% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Antigo 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
Antigo Waterworks (EPA ID: WI7340086) is a community water system in Wisconsin that serves approximately 7,780 people from groundwater sources.
This system serves ZIP code 54409 in Antigo.
Violation History
Status breakdown for accepted records with record years 2021-2026: 7 resolved, 0 archived, 1 addressed, and 1 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 | Groundwater Rule | Health-based | Addressed (current) |
| February 1, 2025 | Groundwater Rule | Health-based | Resolved |
| February 1, 2025 | Public Notice | Non-health-based | Resolved |
| December 16, 2024 | Groundwater Rule | Health-based | Resolved |
| December 16, 2024 | Public Notice | Non-health-based | Resolved |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| October 17, 2024 | Public Notice | Non-health-based | Unaddressed (current) |
| April 2, 2022 | Groundwater Rule | Health-based | Resolved |
| April 2, 2022 | 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 |
|---|---|---|---|
| Public Notice | Other (notice or report rule) | 4 | No |
| Groundwater Rule | Other Violation | 4 | Yes |
| LEAD AND COPPER RULE REVISIONS | Treatment Technique | 1 | Yes |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0019 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
1 of 1 ZIP records with known zones is 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.
- 54409 - Antigo
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Antigo Waterworks (WI7340086) on EPA.gov.
Frequently Asked Questions
Is Antigo Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Antigo Waterworks. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.
How many people does Antigo Waterworks serve?
Antigo Waterworks serves approximately 7,780 people across 1 ZIP code in Wisconsin.
Where does Antigo Waterworks get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Antigo Waterworks (WI): 5 Health Violations. https://zipcheckup.com/water-system/wi7340086/
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title = {{Antigo Waterworks (WI): 5 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi7340086/}
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What You Can Do
Test your water
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Check your specific ZIP code
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Contact your utility
Antigo Waterworks (EPA ID: WI7340086) - request the latest Consumer Confidence Report or ask about specific contaminants.