WaterQ
Washington State Report All States
Official Status: March 2026

Is Mountlake Terrace tap water safe to drink?

✓ Generally Safe
A

Mostly yes — Mountlake Terrace scores 99/100.

Safety Score
99
out of 100

Still not sure if you need a filter in Mountlake Terrace?

Read Decision Guide →

Mountlake Terrace

Washington

View Washington state report Verified: Apr 2026

Is Mountlake Terrace tap water safe to drink?

Mostly yes — Mountlake Terrace scores 99/100. This report aggregates EPA drinking water data across 0 local systems in Mountlake Terrace. We found 0 total violations (0 unresolved).

Real-Time Environment

Live: 02:45 PM
0mm Precipitation

☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Mountlake Terrace.

Water Quality Impact

✅ Minimal Impact Localized weather conditions may influence test result variability.

🛡️ Home Water Treatment Needs

Should you invest in filtration or softening for your home in Mountlake Terrace?

Requirement Status
Optional
🟢
💡

Expert Advice

Your water quality is excellent. Standard filtration is optional but can further enhance taste.

Buying a Filter?

Should you buy a water purifier in Mountlake Terrace? See our analysis.

Baby Formula Safety

Is Mountlake Terrace tap water safe for infants? Critical safety guide.

Homebuyer's Perspective

For those looking to relocate to Mountlake Terrace, water quality is a key factor in long-term property maintenance. The high safety score (99/100) suggests lower risk for plumbing corrosion and appliance scaling.

Property Impact: Positive / Stable

Health & Family Safety

Current records show no major contaminant spikes, making Mountlake Terrace a preferred choice for health-conscious families.

View Health Risk Glossary →

Score Breakdown for Mountlake Terrace

EPA Compliance & Violations 85/100
Contaminant Safety Margin 99%

*Scores are calculated using weighted EPA monitoring data from the past 5 years.

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 0 public water systems 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 N/A out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.

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.

Water Quality Score
99/100
Grade
A
Water Systems
1
Population
26,402

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.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology →

Water Systems Serving Mountlake Terrace (0)

Water system data coming soon for Mountlake Terrace.

Related

Compare Mountlake Terrace water quality: View all states · Contaminant library · How we score water quality