North Shore Water Commission
EPA ID: WI2413515 · 35,598 people served · 42 ZIP codes
Although compliance varies widely among water utilities nationally, North Shore Water Commission stands out with zero EPA violations over five consecutive monitoring years, delivering safe tap water to 35,598 residents and showing no enforcement activity across the entire reporting span.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for North Shore Water Commission Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The North Shore Water Commission serves a community with a median household income of $62,176 and an estimated 785,981 residents across its service area. Approximately 85% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 49% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. 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?
North Shore Water Commission'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.
About 2% of homes in Milwaukee County, Wisconsin rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites.
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
North Shore Water Commission (EPA ID: WI2413515) is a community water system in Wisconsin that serves approximately 35,598 people from surface water sources.
This system provides water to 42 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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: 4 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 38 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 42 ZIP codes:
53201 · 53202 · 53203 · 53204 · 53205 53206 · 53207 · 53208 · 53209 · 53210 53211 · 53212 · 53213 · 53214 · 53215 53216 · 53217 · 53218 · 53219 · 53220 53221 · 53222 · 53223 · 53224 · 53225 53226 · 53227 · 53228 · 53233 · 53234 53237 · 53244 · 53259 · 53263 · 53267 53268 · 53274 · 53278 · 53288 · 53290 53293 · 53295
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for North Shore Water Commission (WI2413515) on EPA.gov.
Frequently Asked Questions
Is North Shore Water Commission water safe to drink?
Based on EPA records, North Shore Water Commission has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does North Shore Water Commission serve?
North Shore Water Commission serves approximately 35,598 people across 42 ZIP codes in Wisconsin.
Where does North Shore Water Commission get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
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.