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The Center for Advances in Water and Air Quality (CAWAQ) promotes understanding of critical environmental issues and develops solutions for mitigating challenges in water and air quality faced by industries and global community through research, educational programs, and community outreach.


Implementing the Surface Water Quality Standards in Permitting

The TCEQ is responsible for maintaining and enhancing water quality in the state. One aspect of that responsibility involves implementation of theTexas Surface Water Quality Standards when issuing permits for wastewater discharges to surface waters of the state. The TCEQ issues wastewater permits under a program called the Texas Pollutant Discharge Elimination System (TPDES)....more

Texas Integrated Report of Surface Water Quality

The Texas Integrated Report describes the status of Texas’ natural waters based on historical data. It assigns waterways to various categories depending on the extent to which they attain the Texas Surface Water Quality Standards, which were developed to define water quality and the criteria for which that quality is measured....more

About the Air Pollutant Watch List

Each year the TCEQ collects an extensive amount of ambient air monitoring data and evaluates the potential for adverse short- and long-term health effects and odors. The Air Pollutant Watch List (APWL) is the TCEQ's program to address areas in Texas where monitoring data show persistent, elevated concentrations of air toxics....more 

Coastal Environmental Protection

Coastal environmental protection is an integral part of the Texas General Land Office mission. The agency addresses coastal environmental damage both proactively and reactively, through efforts such as educating the public to change bad habits, and cleaning up messes caused by others....more

The Hydraulic Fracturing Water Cycle

Recently, some companies have begun recycling wastewater from previous hydraulic fracturing activities, rather than acquiring water from ground or surface resources. Ground water is the supply of fresh water found beneath the Earth’s surface, usually in aquifers, which supply wells and springs. It provides a major source of drinking water...more

Health & Environmental Research Online (HERO)

The Health and Environmental Research Online (HERO) database provides an easy way to access and influence the scientific literature behind EPA science assessments.....more

Texas Emissions Reduction Plan (TERP)

The TERP program provides financial incentives to eligible individuals, businesses, or local governments to reduce emissions from polluting vehicles and equipment.....more

National Contaminant Occurrence Database (NCOD)

EPA developed the NCOD to satisfy the statutory requirements set by Congress in the 1996 amendments to the Safe Drinking Water Act (SDWA) to maintain a national drinking water contaminant occurrence database using samples data for both regulated and unregulated contaminants in public water systems.....more

Greenhouse Gas Emissions

Learn about the four most important greenhouse gases-carbon dioxide, methane, nitrous oxide, and fluorinated gases-and options for reducing emissions. Learn about the main human activities that add greenhouse gases to our atmosphere and opportunities to reduce emissions from these sources.....more