Mountlake Terrace
Is Mountlake Terrace tap water safe to drink?
Mostly yes — Mountlake Terrace scores 99/100. This report aggregates EPA drinking water data across 1 local system in Mountlake Terrace. We found 12 total violations (1 unresolved).
Real-Time Environment
Live: 04:45 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Mountlake Terrace.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Mountlake Terrace?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Mountlake Terrace tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Mountlake Terrace tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Mountlake Terrace, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (99/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Current records show no major contaminant spikes, making Mountlake Terrace a preferred choice for health-conscious families.
View Health Risk Glossary →Compliance Record for Mountlake Terrace
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Mountlake Terrace.
Frequently Asked Questions
Is Mountlake Terrace tap water safe to drink?
Mostly yes — Mountlake Terrace scores 99/100.
How many water systems serve Mountlake Terrace?
Mountlake Terrace is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Mountlake Terrace?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Mountlake Terrace.
What is the water quality score for Mountlake Terrace?
The water quality score for Mountlake Terrace is 99 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 Mountlake Terrace?
Current contaminant data for Mountlake Terrace is being updated. Check back soon or search your specific address for the latest results.
Mountlake Terrace Water Quality Summary
Mountlake Terrace, WA receives a water quality score of 99/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Mountlake Terrace'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.
Mountlake Terrace's score of 99 is 5 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 →
Top Lab-Tested Water Filters for Mountlake Terrace
Certified solutions rigorously tested against EPA drinking water standards, lead, and PFAS.
APEC Water Systems ROES-50 5-Stage Reverse Osmosis System
Removes up to 99% of 1,000+ contaminants including Lead, Chlorine, PFAS, Fluoride, Arsenic, and TDS.
Waterdrop G3P800 Tankless Reverse Osmosis System
800 GPD high capacity, 3:1 pure-to-drain ratio, smart LED faucet displaying real-time TDS and filter life.
Aquasana 3-Stage Under Sink Water Filter System (AQ-5300+)
Reduces 77 contaminants including 99.6% of Lead and PFOA/PFOS while retaining healthy minerals (calcium, magnesium).
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Water Systems Serving Mountlake Terrace (1)
Check Your Specific Address
Water quality can vary by neighborhood in Mountlake Terrace.
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