Looking for specific services like HR or municipal engineering? Municipalities of Saskatchewan has discontinued the Professional Services Directory but visit CentralSource to see partner programs available to Municipalities of Saskatchewan members. CentralSource (formerly SUMAdvantage) offers a carefully cultivated list of partners developed through the request for proposal process (RFP). Members can call these partners for a quote to complete their own internal competitions and evaluations. Save time, money, and feel safe knowing purchases are trade compliant.