Houston, Texas Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is Houston's Water Safe to Drink?
Generally Safe. Houston's tap water meets EPA standards for drinking water quality. The water scored 89/100 in our analysis.
Contaminants Found in Houston's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0.0040 mg/L | 0.015 mg/L | 26.7% | Safe |
Compliance Violations
Past EPA violations recorded for Houston's water system
other
Contaminant 0300 - 5/1/2025
Resolvedother
Contaminant 8000 - 12/1/2019
Resolvedother
Contaminant 5000 - 10/1/2015
ResolvedAbout Houston's Water System
CITY OF HOUSTON
- PWS ID:
- TX1010013
- Population Served:
- 2,970,543
- Water Source:
- surface
A-89/100
Houston Water Quality Score
Based on EPA contaminant data and compliance records
100
Contaminants
73
Compliance
85
Infrastructure
Positive Findings
- Good overall water quality
- No health-based (MCL) violations
- All tested contaminants well below EPA limits
- Low lead levels detected
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
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Other Cities in Texas
Compare water quality with nearby cities.
View all Texas cities →Frequently Asked Questions
- Where does Houston's water come from?
- Houston primarily uses surface water sources.
- How often is Houston's water tested?
- Water utilities are required to test for contaminants regularly and report results to the EPA.
- Should I use a water filter in Houston?
- While the water meets EPA standards, many families choose filters for extra peace of mind.