Grand Junction
Is Grand Junction tap water safe to drink?
Mostly yes — Grand Junction scores 97/100. This report aggregates EPA drinking water data across 3 local systems in Grand Junction. We found 41 total violations (11 unresolved).
Real-Time Environment
Live: 11:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Grand Junction.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Grand Junction?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filter or no filter for Grand Junction water? Here's what the data says.
Baby Formula Safety
What new parents in Grand Junction should know about tap water safety.
Homebuyer's Perspective
Water quality is easy to overlook when evaluating a move to Grand Junction, but it can affect plumbing longevity and appliance lifespan. The high safety score (97/100) 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 Grand Junction
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Grand Junction.
Frequently Asked Questions
Is Grand Junction tap water safe to drink?
Mostly yes — Grand Junction scores 97/100.
How many water systems serve Grand Junction?
Grand Junction is served by 3 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Grand Junction?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Grand Junction.
What is the water quality score for Grand Junction?
The water quality score for Grand Junction is 97 out of 100, based on EPA contaminant data, violation history, and testing results across the 3 systems serving the city.
What are the top contaminants in Grand Junction?
The top contaminants detected in Grand Junction include Lead (90th percentile). View detailed information on our contaminants page.
Grand Junction Water Quality Summary
Grand Junction, CO receives a water quality score of 97/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 3 public water systems serving the area.
Grand Junction'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.
Grand Junction's score of 97 is 15 points above the Colorado state average of 82, and above the nationwide average of roughly 78/100 across all U.S. states.
For residents and prospective home buyers in Grand Junction, this mid-size Colorado city offers highly rated drinking water sourced from high-elevation Mountain West supplies. Although the broader region carries a historic hardrock mining legacy, the local tap water consistently achieves excellent marks across its multiple distinct water systems. This reliable performance maintains reliable compliance for households, even in a geography shaped by past industrial mining activities.
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 Grand Junction (3)
Check Your Specific Address
Water quality can vary by neighborhood in Grand Junction.
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