Humboldt Municipal Water Department
EPA ID: IA4641064 · 4,792 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Humboldt Municipal Water Department (IA4641064): no EPA violations recorded in the last five years. Federal monitoring records confirm Humboldt Municipal Water Department has operated without any EPA violations for the full five-year window - covering every contaminant category and reporting cycle across a service area of approximately 4,792 residents, with no gaps in the compliance record.
Data: EPA SDWIS
Service Area Map
Coverage area for Humboldt Municipal Water Department Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Humboldt Municipal Water Department serves a community with a median household income of $68,577 and an estimated 6,369 residents across its service area. Approximately 82% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Humboldt Municipal Water Department'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 Iowa
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
Humboldt Municipal Water Department (EPA ID: IA4641064) is a community water system in Iowa that serves approximately 4,792 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 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 1 (High 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 IA 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 the full compliance record for Humboldt Municipal Water Department (IA4641064) on EPA.gov.
Frequently Asked Questions
Is Humboldt Municipal Water Department water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Humboldt Municipal Water Department 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 Humboldt Municipal Water Department serve?
Humboldt Municipal Water Department serves approximately 4,792 people across 2 ZIP codes in Iowa.
Where does Humboldt Municipal Water Department 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 →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Humboldt Municipal Water Department Water Quality Report, IA. https://zipcheckup.com/water-system/ia4641064/
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