Federal Way
Is Federal Way tap water safe to drink?
Mostly yes — Federal Way scores 98/100. This report aggregates EPA drinking water data across 1 local system in Federal Way. We found 78 total violations (37 unresolved).
Real-Time Environment
Live: 07:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Federal Way.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Federal Way?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Federal Way tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Federal Way tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Federal Way, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (98/100) 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 Federal Way
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Federal Way.
Frequently Asked Questions
Is Federal Way tap water safe to drink?
Mostly yes — Federal Way scores 98/100.
How many water systems serve Federal Way?
Federal Way is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Federal Way?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Federal Way.
What is the water quality score for Federal Way?
The water quality score for Federal Way is 98 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 Federal Way?
The top contaminants detected in Federal Way include Lead (90th percentile). View detailed information on our contaminants page.
Federal Way Water Quality Summary
Federal Way, WA receives a water quality score of 98/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Federal Way'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.
Federal Way's score of 98 is 4 points above the Washington state average of 94, and above the nationwide average of roughly 78/100 across all U.S. states.
Nestled in the Pacific Northwest near the Puget Sound coastline and forested mountains, Federal Way benefits from the region's generally clean source water. For residents and prospective homebuyers in this mid-size Washington city, the local water system delivers excellent quality that consistently aligns with outstanding safety standards. This high level of performance means households can expect reliable tap water with very little history of regulatory issues. Overall, the local supply provides peace of mind for families, showcasing how effectively the municipal infrastructure channels the area's natural environmental advantages.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Washington water quality rankings report →
Key Contaminants
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Water Systems Serving Federal Way (1)
Check Your Specific Address
Water quality can vary by neighborhood in Federal Way.
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