Football pitches, hockey pitches and multi-purpose fields with synthetic surfaces have special requirements. The surface structure is water-permeable, but microplastics from granules, blade abrasion or fine particles from tartan surfaces can be washed out with the rainwater. An integrated system for drainage and rainwater treatment helps to retain these substances and minimise their discharge into the environment. At the same time, the rainwater management system used must be permanently efficient and mechanically resilient – especially with intensive sporting use and frequent cleaning of the playing surfaces.