Welcome to Texas Water Systems of San Antonio, INC We are a family owned company operating and serving the San Antonio and surrounding area since 1981. As one of the top water treatment businesses, it is important to us that we maintain the most up-to-date information, equipment, and reliability in service that people have come to expect. Water needs vary from person to person. As a solution for this, we offer a number of different treatment options and equipment for residential and commercial use. Whether you are looking for purified drinking water, whole house filtration or are trying to treat an entire facility, let our experienced specialists help decide what is right for you and your family. As you make your way through this site you will encounter todays most reliable and efficient water equipment. With over 35 years of staff experience in sales and service, we are Texas Commission Environmental Quality, ( TCEQ ), State Certified and carry a Class III water treatment license.