Grantsburg Waterworks
EPA ID: WI8070310 · 1,460 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Grantsburg Waterworks (WI8070310): 5 EPA violations in the last five years. Beyond the 5 historical violations on Grantsburg Waterworks's EPA record, nothing remains open - the utility is currently compliant and supplies water to 1,460 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Grantsburg Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Grantsburg Waterworks serves a community with a median household income of $63,988 and an estimated 4,706 residents across its service area. Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Grantsburg Waterworks's water is pumped from underground aquifers. 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
Detected Contaminants
How Grantsburg Waterworks compares to EPA limits
What This Means For You
Lead and Copper Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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
Grantsburg Waterworks (EPA ID: WI8070310) is a community water system in Wisconsin that serves approximately 1,460 people from groundwater sources.
This system serves ZIP code 54840 in Grantsburg.
Violation History
Status breakdown for accepted records with record years 2021-2026: 5 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 |
|---|---|---|---|
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Resolved |
| August 24, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| August 24, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| August 24, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| January 1, 2022 | Stage 1 DBP Rule | 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 | Treatment Failure | 3 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | N/A |
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
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 54840 - Grantsburg
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Grantsburg Waterworks (WI8070310) on EPA.gov.
Frequently Asked Questions
Is Grantsburg Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Grantsburg Waterworks; its 5 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Grantsburg Waterworks serve?
Grantsburg Waterworks serves approximately 1,460 people across 1 ZIP code in Wisconsin.
Where does Grantsburg Waterworks get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Grantsburg Waterworks (WI): 5 EPA Violations. https://zipcheckup.com/water-system/wi8070310/
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author = {{ZipCheckup}},
title = {{Grantsburg Waterworks (WI): 5 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi8070310/}
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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
Grantsburg Waterworks (EPA ID: WI8070310) - request the latest Consumer Confidence Report or ask about specific contaminants.