Grantsburg Waterworks
EPA ID: WI8070310 · 1,460 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Grantsburg Waterworks (WI8070310): 5 violations on record since 2021. Per the federal file, all 5 violations logged for Grantsburg Waterworks carry a resolved status, and around 1,460 people get water from this system.
Data: EPA SDWIS
Service Area Map
Coverage area for Grantsburg Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Grantsburg Waterworks have a median household income of $63,988 and about 4,706 residents live in those ZIP codes (Census; not the number of people this system supplies). 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 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
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 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Resolved |
| August 24, 2022 | Public Notice | Non-health-based | Resolved |
| August 24, 2022 | Public Notice | Non-health-based | Resolved |
| August 24, 2022 | Public Notice | Non-health-based | Resolved |
| January 1, 2022 | Lead and Copper 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 |
|---|---|---|---|
| Public Notice | Other (notice or report rule) | 3 | No |
| Public Notice | 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 |
|---|---|---|
| 0.002 mg/L | No | 2023-06-30 |
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 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.
- 54840 - Grantsburg
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records 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
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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.