Houston
Is Houston tap water safe to drink?
Mostly yes — Houston scores 95/100. This report aggregates EPA drinking water data across 2 local systems in Houston. We found 0 total violations (0 unresolved).
Real-Time Environment
Live: 02:30 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Houston.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Houston?
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 Houston? See our analysis.
Baby Formula Safety
Is Houston tap water safe for infants? Critical safety guide.
Homebuyer's Perspective
For those looking to relocate to Houston, water quality is a key factor in long-term property maintenance. The high safety score (95/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Uranium levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Houston
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Houston.
Frequently Asked Questions
Is Houston tap water safe to drink?
Mostly yes — Houston scores 95/100.
How many water systems serve Houston?
Houston is served by 2 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Houston?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Houston.
What is the water quality score for Houston?
The water quality score for Houston is 95 out of 100, based on EPA contaminant data, violation history, and testing results for all serving water systems.
What are the top contaminants in Houston?
The top contaminants detected in Houston include Uranium, Benzene, Radium-228. View detailed information on our contaminants page.
Houston Water Quality Summary
Houston, TX receives a water quality score of 95/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 525 public water systems serving the area.
Houston'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.
Houston's score of 95 is 17 points above the Texas state average of 78, and above the nationwide average of roughly 78/100 across all U.S. states.
Families moving to the Houston major metro area can be encouraged by the highly favorable water quality ratings achieved across this Texas region's hundreds of individual public water systems. Because this South-central community is situated among large urban centers with varied geology and a prominent oil and gas industry, local water managers must navigate complex environmental and industrial influences. The excellent collective performance across these utilities indicates that treatment protocols are successfully safeguarding household tap water throughout the metropolitan area.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Texas water quality rankings report →
Key Contaminants
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Water Systems Serving Houston (2)
Check Your Specific Address
Water quality can vary by neighborhood in Houston.
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Quick compare in Texas
Compare Houston water quality: View all states · Contaminant library · How we score water quality