The workshop outlines: filtration, theory, filter media, backwash management, filter maintenance and diagnostic techniques as well as operational problems and maintenance solutions. It also provides an introduction to filters, their purpose, construction, operational problems, corrective measures, improvements and repairs. The course consists of information so that operational staff will be able to provide effective filter maintenance and operational optimization. It will give the operators the required understanding and awareness to effectively operate and maintain their filters. They will be presented with material relevant to effectively operate the filters, and with explanation and examples of optimization and surveillance methods useful in operation and maintenance of filters.