LOCATED in Ajax, Ontario, Performance Water Systems in Ajax services customers across the Durham & Northumberland Regions, and the GTA East. Our retail location at 855 Westney Road South offers our customers a quick stop for needed filters and more. Visit with us for advice on the installation of new systems that could solve your water challenges. Call ahead to check on your particular items at 289- 372-0310 or Toll Free: 1-855-256-0116.