Hermiston
Is Hermiston tap water safe to drink?
Mostly yes — Hermiston scores 94/100. This report aggregates EPA drinking water data across 1 local system in Hermiston. We found 168 total violations (6 unresolved).
Real-Time Environment
Live: 11:45 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Hermiston.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Hermiston?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filtration technologies matched to Hermiston contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Hermiston.
Homebuyer's Perspective
Municipal water quality in Hermiston directly influences pipe corrosion rates and home filtration needs. The high safety score (94/100) 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 Hermiston
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Hermiston.
Frequently Asked Questions
Is Hermiston tap water safe to drink?
Mostly yes — Hermiston scores 94/100.
How many water systems serve Hermiston?
Hermiston is served by 1 public water system in our latest EPA-backed dataset.
How can I check water quality for my exact address in Hermiston?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Hermiston.
What is the water quality score for Hermiston?
The water quality score for Hermiston is 94 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 Hermiston?
The top contaminants detected in Hermiston include Lead (90th percentile). View detailed information on our contaminants page.
Hermiston Water Quality Summary
Hermiston, OR receives a water quality score of 94/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 1 public water system serving the area.
Hermiston'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.
Hermiston's score of 94 is 11 points above the Oregon state average of 83, 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 Oregon water quality rankings report →
Key Contaminants
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Water Systems Serving Hermiston (1)
Check Your Specific Address
Water quality can vary by neighborhood in Hermiston.
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