Total Quality Management (abbreviated as TQM) is a Lean manufacturing management concept similar to Six Sigma. The fundamental basis of TQM is to reduce production or service errors, increase customer satisfaction, streamline supply chain management, and ensure equipment is current and employees are well trained. This management system is typically found in companies and facilities utilizing other Lean processes such as 5S, kanban, and kaizen.
TQM aims to limit errors to 1 per million units produced. It does this by ensuring conformance to internal requirements, whereas Six Sigma does this by focusing on reducing the number of defects and impurities to improve quality.