Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Texas Water Quality Reports
Water quality scores for 11 cities in Texas
El Paso
1,821 residents
Austin
1,000,000 residents
Dallas
2,300,000 residents
Plano
290,000 residents
San Antonio
1,800,000 residents
Arlington
405,420 residents
Fort Worth
405,420 residents
Houston
2,970,543 residents
Corpus Christi
848 residents
Lubbock
2,250 residents
Irving
75 residents
About Texas Water Quality
Texas has a diverse water landscape with significant regional variations in water quality. The state's rapid population growth, agricultural demands, and energy industry activities create ongoing water quality challenges. From the Edwards Aquifer in Central Texas to the Ogallala Aquifer in the Panhandle, groundwater quality varies considerably across the state.
Based on our analysis of 11 cities in Texas, the average water quality score is 88/100. 2 cities have water quality scores below 70, indicating potential concerns that residents should be aware of. The highest-rated city is Irving with a score of 65/100, while El Paso has the most room for improvement at 97/100.
Water Sources in Texas
Texas relies on a mix of surface water (rivers and reservoirs) and groundwater. Major aquifers include the Ogallala, Gulf Coast, Edwards-Trinity, and Carrizo-Wilcox. Surface water sources include the Colorado, Brazos, Trinity, and Rio Grande rivers. Many communities in West Texas depend entirely on groundwater.
Common Water Contaminants in Texas
These contaminants have been detected in various Texas water systems
Texas Water Regulations
The Texas Commission on Environmental Quality (TCEQ) regulates drinking water and generally follows federal EPA standards. Texas has been working to address legacy contamination issues and improve water infrastructure across the state. The state provides resources for small water systems that may struggle with compliance.
Health Considerations
West Texas residents should be particularly aware of arsenic levels in groundwater. Some Gulf Coast communities face naturally occurring radium in their water supply. Agricultural areas may have elevated nitrate levels that pose risks for infants. Hurricane damage can temporarily affect water quality and require boil notices.
Recommendations for Texas Residents
Texans in areas with known groundwater contamination should consider point-of-use filters certified for specific contaminants. Residents using private wells should test annually. During severe weather events, follow local guidance on water safety. Consider activated carbon filters for chlorine taste and odor issues.
Frequently Asked Questions About Texas Water Quality
Is Texas's tap water safe to drink?
Most Texas cities have tap water that meets EPA safety standards. With an average score of 88/100 across 11 cities we analyzed, Texas generally has good water quality. However, water quality varies by location, so check your specific city's report.
What are the main water quality concerns in Texas?
The most common water quality concerns in Texas include arsenic (west texas groundwater), radium (gulf coast region), nitrates (agricultural areas). These contaminants can come from natural sources, industrial activities, or aging infrastructure. Review your city's specific report to see which contaminants affect your area.
Should I use a water filter in Texas?
Whether you need a water filter depends on your specific location and health concerns. With 2 cities in Texas showing elevated contaminant levels, residents in those areas may benefit from filtration. Look for filters certified by NSF/ANSI to remove the specific contaminants found in your area.
Where can I find my Texas water quality report?
Public water systems in Texas are required to provide annual Consumer Confidence Reports (CCRs) to residents. You can usually find your report on your water utility's website, request it by phone, or access it through the EPA's database. Our city-level reports above summarize key information from these official sources.