Longview
Is Longview tap water safe to drink?
Mostly yes — Longview scores 91/100. This report aggregates EPA drinking water data across 1 local system in Longview. We found 18 total violations (13 unresolved).
Real-Time Environment
Live: 09:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Longview.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Longview?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Evaluation of municipal compliance and household filtration options in Longview.
Baby Formula Safety
EPA compliance thresholds and pediatric water precautions for Longview.
Homebuyer's Perspective
Water system history in Longview informs property maintenance and private filtration requirements. The high safety score (91/100) 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 Longview
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Longview.
Frequently Asked Questions
Is Longview tap water safe to drink?
Mostly yes — Longview scores 91/100.
How many water systems serve Longview?
Longview is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Longview?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Longview.
What is the water quality score for Longview?
The water quality score for Longview is 91 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 Longview?
The top contaminants detected in Longview include Lead (90th percentile). View detailed information on our contaminants page.
Longview Water Quality Summary
Longview, WA receives a water quality score of 91/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Longview'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.
Longview's score of 91 is 3 points below 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 Longview (1)
Check Your Specific Address
Water quality can vary by neighborhood in Longview.
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Compare Longview water quality: View all states · Contaminant library · How we score water quality