Derby
Is Derby tap water safe to drink?
Generally acceptable, but review local hotspots — score 76/100. This report aggregates EPA drinking water data across 1 local system in Derby. We found 75 total violations (18 unresolved).
Real-Time Environment
Live: 10:00 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Derby.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Derby?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Filter requirements and certified reduction benchmarks for Derby tap water.
Baby Formula Safety
Infant formula preparation risks, nitrate levels, and lead pipe guidance in Derby.
Homebuyer's Perspective
Evaluating water infrastructure in Derby protects plumbing and helps estimate water heater longevity. With a score of 76/100, we recommend budgeting for high-quality point-of-entry filtration systems to protect your home's value.
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 Derby
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Derby.
Frequently Asked Questions
Is Derby tap water safe to drink?
Generally acceptable, but review local hotspots — score 76/100.
How many water systems serve Derby?
Derby is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Derby?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Derby.
What is the water quality score for Derby?
The water quality score for Derby is 76 out of 100, based on EPA contaminant data, violation history, and testing results across the 1 system serving the city.
What are the top contaminants in Derby?
The top contaminants detected in Derby include Lead (90th percentile). View detailed information on our contaminants page.
Derby Water Quality Summary
Derby, KS receives a water quality score of 76/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Derby's water quality is near the national average. While most systems meet EPA standards, some violations have been recorded. Residents may wish to review their specific water system's report for contaminant details.
Derby's score of 76 is 2 points below the Kansas state average of 78, and below the nationwide average of roughly 78/100 across all U.S. states.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Kansas water quality rankings report →
Key Contaminants
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Water Systems Serving Derby (1)
Check Your Specific Address
Water quality can vary by neighborhood in Derby.
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Compare Derby water quality: View all states · Contaminant library · How we score water quality