Duluth
EPA ID: MN1690011 · 86,859 people served · 17 ZIP codes
Although compliance varies widely among water utilities nationally, Duluth stands out with zero EPA violations over five consecutive monitoring years, delivering safe tap water to 86,859 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 Duluth Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Duluth serves a community with a median household income of $72,419 and an estimated 127,793 residents across its service area. Approximately 75% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Duluth'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 1% of homes in Carlton County, Minnesota rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Minnesota
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
Duluth (EPA ID: MN1690011) is a community water system in Minnesota that serves approximately 86,859 people from surface water sources.
This system provides water to 17 ZIP codes across 4 communities.
Average Home Safety Score: B (72/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 55801 | 0.008 mg/L | No | N/A |
| 55802 | 0.008 mg/L | No | N/A |
| 55803 | 0.008 mg/L | No | N/A |
| 55804 | 0.008 mg/L | No | N/A |
| 55805 | 0.008 mg/L | No | N/A |
| 55806 | 0.008 mg/L | No | N/A |
| 55807 | 0.008 mg/L | No | N/A |
| 55808 | 0.008 mg/L | No | N/A |
| 55810 | 0.008 mg/L | No | N/A |
| 55811 | 0.008 mg/L | No | N/A |
| 55812 | 0.008 mg/L | No | N/A |
| 55814 | 0.008 mg/L | No | N/A |
| 55815 | 0.008 mg/L | No | N/A |
| 55816 | 0.008 mg/L | No | N/A |
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: 10 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 7 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.
- 55733 — Esko
- 55779 — Saginaw
- 55791 — Twig
- 55801 — Duluth
- 55802 — Duluth
- 55803 — Duluth
- 55804 — Duluth
- 55805 — Duluth
- 55806 — Duluth
- 55807 — Duluth
- 55808 — Duluth
- 55810 — Duluth
- 55811 — Duluth
- 55812 — Duluth
- 55814 — Duluth
- 55815 — Duluth
- 55816 — Duluth
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Duluth (MN1690011) on EPA.gov.
Frequently Asked Questions
Is Duluth water safe to drink?
Based on EPA records, Duluth has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Duluth serve?
Duluth serves approximately 86,859 people across 17 ZIP codes in Minnesota.
Where does Duluth get its water?
The primary water source is surface water.
Contact Your Water Utility
Public-record contact information for the water utility serving this system. Use these channels to request water quality reports, ask about service, or report issues directly.
Contact information from City of Duluth Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility, does not act as its agent, and does not provide customer support for it. Contact details shown are public-record information from CCR filings. For service issues, contact the utility directly using the information above.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: City of Duluth Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
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 →
Lead Service Line Replacement Tracker
This water utility's lead service line (LSL) replacement program is tracked from public Consumer Confidence Report filings. Email signup notifies subscribers when the utility files an updated replacement plan or progress milestone.
City of Duluth
ZipCheckup is not affiliated with this water utility. LSL replacement-program data is sourced from public CCR filings published by the utility. Subscription notifications are based on automated parsing of subsequent CCR releases.
Learn more about Lead and Copper Rule replacement requirements →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
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.