Portland
Is Portland tap water safe to drink?
Mostly yes — Portland scores 91/100. This report aggregates EPA drinking water data across 2 local systems in Portland. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 03:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Portland.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Portland?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Portland tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Portland tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Portland, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (91/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Arsenic levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Portland
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Portland.
Frequently Asked Questions
Is Portland tap water safe to drink?
Mostly yes — Portland scores 91/100.
How many water systems serve Portland?
Portland is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Portland?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Portland.
What is the water quality score for Portland?
The water quality score for Portland is 91 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Portland?
The top contaminants detected in Portland include Arsenic, Uranium, Selenium. View detailed information on our contaminants page.
Portland Water Quality Summary
Portland, OR receives a water quality score of 91/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 5 public water systems serving the area.
Portland'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.
Portland's score of 91 is 4 points above the Oregon state average of 87, and above the nationwide average of roughly 78/100 across all U.S. states.
Nestled in the Pacific Northwest, a region characterized by forested mountains and coastlines that yield naturally clean source water, Portland benefits from high-quality municipal supplies. For a large city operating several water systems, maintaining such outstanding quality marks highlights effective distribution management. Residents and prospective homebuyers in this Oregon community can feel confident in the safety and purity of their tap water, which mirrors the environmental health of the surrounding ecosystem.
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 Portland (2)
Check Your Specific Address
Water quality can vary by neighborhood in Portland.
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Compare Portland water quality: View all states · Contaminant library · How we score water quality