ROC 199376  -  BONDED  -  INSURED

  • Integrity
  • Success
  • Balance
  • Education
  • Teamwork
  • Excellence
  • Commitment
  • Knowledge
  • Punctual
  • Professional
  • Communication
  • Gratitude

The #1 privately held Water Treatment Products and Service Company in the Southwest.


Southwest 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 servi

.ce.  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.


Customers can rest assured that our unique combination of experience and
innovation work together to give them optimum products for precise solutions, backed by impeccable service.