MWQA suggests you consider these factors before selecting a company or vendor to assist you with your unique water quality improvement needs. Make sure the company* Has an actual physical office address* Has additional training or industry certification in their employ or has had ample experience in the industry* Has a personal state license. The business should also be registered and licensed in the State of Minnesota. Check for a license on the Minnesota Department of Labor and Industry’s website. *Employs people who hold a valid Water Conditioning Master, Journeyworker or Plumbing license.*Is part of the local business community with memberships in good standing with organizations such as the Chamber of Commerce or the Better Business Bureau.*Is a member of the Minnesota Water Quality Association (MWQA) or the National Water Quality Association (WQA).*Can provide you with product warranty information.*Can provide the means to determine that your equipment is operating properly.*Will provide instructions on the care of your equipment and how to get system maintenance.