Biwabik
EPA ID: MN1690004 · 975 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Biwabik (MN1690004): no drinking-water violations recorded since 2021. From the earliest to the most recent cycle in the EPA data on file, Biwabik has logged zero violations for the 975 people in its service area - a count of records, not a test result for any home.
Data: EPA SDWIS
Service Area Map
Coverage area for Biwabik Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Biwabik have a median household income of $66,528 and about 7,031 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 85% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Biwabik's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Minnesota
System Overview
Biwabik (EPA ID: MN1690004) is a community water system in Minnesota that serves approximately 975 people from surface water sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2025-12-31 |
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
3 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 MN 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 Biwabik (MN1690004) on EPA.gov.
Frequently Asked Questions
Is Biwabik water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Biwabik in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Biwabik serve?
Biwabik serves approximately 975 people across 3 ZIP codes in Minnesota.
Where does Biwabik get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Biwabik Water Quality Report, MN. https://zipcheckup.com/water-system/mn1690004/
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author = {{ZipCheckup}},
title = {{Biwabik Water Quality Report, MN}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mn1690004/}
}