Dubuque
Is Dubuque tap water safe to drink?
Mostly yes — Dubuque scores 81/100. This report aggregates EPA drinking water data across 2 local systems in Dubuque. We found 36 total violations (20 unresolved).
Real-Time Environment
Live: 11:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Dubuque.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Dubuque?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Evaluation of municipal compliance and household filtration options in Dubuque.
Baby Formula Safety
EPA compliance thresholds and pediatric water precautions for Dubuque.
Homebuyer's Perspective
Water system history in Dubuque informs property maintenance and private filtration requirements. The high safety score (81/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Dubuque
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Dubuque.
Frequently Asked Questions
Is Dubuque tap water safe to drink?
Mostly yes — Dubuque scores 81/100.
How many water systems serve Dubuque?
Dubuque is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Dubuque?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Dubuque.
What is the water quality score for Dubuque?
The water quality score for Dubuque is 81 out of 100, based on EPA contaminant data, violation history, and testing results across the 2 systems serving the city.
What are the top contaminants in Dubuque?
The top contaminants detected in Dubuque include Lead (90th percentile). View detailed information on our contaminants page.
Dubuque Water Quality Summary
Dubuque, IA receives a water quality score of 81/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.
Dubuque's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
Dubuque's score of 81 is 9 points above the Iowa state average of 72, and above the nationwide average of roughly 78/100 across all U.S. states.
As a mid-size city in Iowa, Dubuque is served by two water systems that evaluate the regional challenges of a Midwest landscape characterized by intensive row-crop and livestock agriculture. For prospective homebuyers, this means that while groundwater in the area is prone to nitrates, the local tap water consistently achieves a solid, reliable standard of quality. Residents can feel confident in the municipal supply, though the surrounding agricultural environment makes tracking groundwater conditions a useful habit for households over time.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Iowa water quality rankings report →
Key Contaminants
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Water Systems Serving Dubuque (2)
Check Your Specific Address
Water quality can vary by neighborhood in Dubuque.
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