Herndon
Is Herndon tap water safe to drink?
Mostly yes — Herndon scores 97/100. This report aggregates EPA drinking water data across 2 local systems in Herndon. We found 7 total violations (3 unresolved).
Real-Time Environment
Live: 11:00 AM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Herndon.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Herndon?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Filtration technologies matched to Herndon contaminant records.
Baby Formula Safety
Guidance on preparing infant formula using municipal tap water in Herndon.
Homebuyer's Perspective
Municipal water quality in Herndon directly influences pipe corrosion rates and home filtration needs. The high safety score (97/100) 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 Herndon
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Herndon.
Frequently Asked Questions
Is Herndon tap water safe to drink?
Mostly yes — Herndon scores 97/100.
How many water systems serve Herndon?
Herndon is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Herndon?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Herndon.
What is the water quality score for Herndon?
The water quality score for Herndon is 97 out of 100, based on EPA contaminant data, violation history, and testing results across the 2 systems serving the city.
What are the top contaminants in Herndon?
The top contaminants detected in Herndon include Lead (90th percentile). View detailed information on our contaminants page.
Herndon Water Quality Summary
Herndon, VA receives a water quality score of 97/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 2 public water systems serving the area.
Herndon'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.
Herndon's score of 97 is 12 points above the Virginia state average of 85, and above the nationwide average of roughly 78/100 across all U.S. states.
Homebuyers looking to settle in the dense Virginia suburb of Herndon, part of the Washington, D.C. metropolitan area, can expect high-quality tap water, as the community's dual systems consistently achieve near-perfect marks and a top-tier grade. Located in a growing Mid-Atlantic region where the coastal plain meets the Appalachian foothills, this major metro area successfully maintains clean utilities despite rapid suburban expansion. This reliable water quality provides consistent water quality to residents regarding the safety of their daily drinking supply.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Virginia water quality rankings report →
Key Contaminants
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Water Systems Serving Herndon (2)
Check Your Specific Address
Water quality can vary by neighborhood in Herndon.
Related
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Compare Herndon water quality: View all states · Contaminant library · How we score water quality