Filtering Grass (IMAGE) University of Texas at San Antonio Caption UTSA researchers will examine what is the best grass and other vegetation to use along roadways and improve water infiltration which impacts the city's Edwards Aquifer. Credit Photo by Jonas Weckschmied Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.