Maple Valley
Is Maple Valley tap water safe to drink?
Mostly yes — Maple Valley scores 100/100. This report aggregates EPA drinking water data across 1 local system in Maple Valley. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 11:00 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Maple Valley.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Maple Valley?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filtration technologies matched to Maple Valley contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Maple Valley.
Homebuyer's Perspective
Municipal water quality in Maple Valley directly influences pipe corrosion rates and home filtration needs. The high safety score (100/100) 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 Maple Valley
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Maple Valley.
Frequently Asked Questions
Is Maple Valley tap water safe to drink?
Mostly yes — Maple Valley scores 100/100.
How many water systems serve Maple Valley?
Maple Valley is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Maple Valley?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Maple Valley.
What is the water quality score for Maple Valley?
The water quality score for Maple Valley is 100 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 Maple Valley?
The top contaminants detected in Maple Valley include Lead (90th percentile). View detailed information on our contaminants page.
Maple Valley Water Quality Summary
Maple Valley, WA receives a water quality score of 100/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Maple Valley'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.
Maple Valley's score of 100 is 6 points above the Washington state average of 94, 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 Washington water quality rankings report →
Key Contaminants
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Water Systems Serving Maple Valley (1)
Check Your Specific Address
Water quality can vary by neighborhood in Maple Valley.
Related
Quick compare in Washington
Compare Maple Valley water quality: View all states · Contaminant library · How we score water quality