About Us


A Family Tradition


South West Water Service, Inc. is a family owned and operated company started by Don and Joan Oachs in Minnesota 1960, relocating to the Phoenix Metro East Valley in the mid 80’s. The business, built on the solid family values of fairness and integrity, has earned a reputation for expertise, service, and commitment to quality that sets it apart in the field of water treatment products and services. Like many successful enterprises, Southwest Water Service, Inc. stands proudly on almost 50 years of proven service. One of the hallmarks of the company’s success, which now includes among its employees the Oachs’ children and grandchildren, is its ability to stay abreast of the changes in this evolving field. Our pledge to the customer is to apply our expertise through customized solutions, education and superb customer service.