Denver
Is Denver tap water safe to drink?
Mostly yes — Denver scores 86/100. This report aggregates EPA drinking water data across 13 local systems in Denver. We found 915 total violations (105 unresolved).
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Denver?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filter or no filter for Denver water? Here's what the data says.
Baby Formula Safety
What new parents in Denver should know about tap water safety.
Homebuyer's Perspective
Water quality is easy to overlook when evaluating a move to Denver, but it can affect plumbing longevity and appliance lifespan. The high safety score (86/100) 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 Denver
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Denver.
Frequently Asked Questions
Is Denver tap water safe to drink?
Mostly yes — Denver scores 86/100.
How many water systems serve Denver?
Denver is served by 13 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Denver?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Denver.
What is the water quality score for Denver?
The water quality score for Denver is 86 out of 100, based on EPA contaminant data, violation history, and testing results across the 13 systems serving the city.
What are the top contaminants in Denver?
The top contaminants detected in Denver include Lead (90th percentile). View detailed information on our contaminants page.
Denver Water Quality Summary
Denver, CO receives a water quality score of 86/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 13 public water systems serving the area.
Denver'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.
Denver's score of 86 is 4 points above the Colorado state average of 82, and above the nationwide average of roughly 78/100 across all U.S. states.
As a large city situated in Colorado's Mountain West, Denver relies on high-elevation source water distributed through several local systems. While the surrounding region is shaped by a historic legacy of hardrock mining, tap water here consistently earns outstanding marks for safety and quality. For prospective homebuyers and current residents alike, these high ratings offer strong assurance that the local supply is clean and reliable.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Colorado water quality rankings report →
Key Contaminants
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Water Systems Serving Denver (13)
Spring Valley Md No 1
ACrestview Wsd
AHigh View Wd
AEastern Adams Co Md
ANorth Washington Street Wsd
ANorth Lincoln Wsd
APalms Of Archer
DDenver Water Board
FAdvenir French Quarter
ASouthfork Denton Mobile Home Park
CWest Olive Estates
BCherry Creek Valley Wsd
ANorth Pecos Wsd
ACheck Your Specific Address
Water quality can vary by neighborhood in Denver.
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Compare Denver water quality: View all states · Contaminant library · How we score water quality