The Dalles
Is The Dalles tap water safe to drink?
Mostly yes — The Dalles scores 83/100. This report aggregates EPA drinking water data across 2 local systems in The Dalles. We found 152 total violations (11 unresolved).
Real-Time Environment
Live: 11:00 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in The Dalles.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in The Dalles?
Expert Advice
Given the safety margin, a Carbon Block or sediment filter is recommended to improve taste and remove trace particulates.
Buying a Filter?
Filtration technologies matched to The Dalles contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in The Dalles.
Homebuyer's Perspective
Municipal water quality in The Dalles directly influences pipe corrosion rates and home filtration needs. The high safety score (83/100) 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 The Dalles
Based on EPA SDWIS violation records and contaminant test results for all water systems serving The Dalles.
Frequently Asked Questions
Is The Dalles tap water safe to drink?
Mostly yes — The Dalles scores 83/100.
How many water systems serve The Dalles?
The Dalles is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in The Dalles?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for The Dalles.
What is the water quality score for The Dalles?
The water quality score for The Dalles is 83 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 The Dalles?
The top contaminants detected in The Dalles include Lead (90th percentile). View detailed information on our contaminants page.
The Dalles Water Quality Summary
The Dalles, OR receives a water quality score of 83/100 (Grade B) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.
The Dalles'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.
The Dalles's score of 83 matches the Oregon state average, and above 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 Oregon water quality rankings report →
Key Contaminants
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Water Systems Serving The Dalles (2)
Check Your Specific Address
Water quality can vary by neighborhood in The Dalles.
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