Deutsche Gesellschaft für naturnahe Badegewässer e.V. (DGfnB) promotes the dissemination of swimming ponds, natural pools and outdoor pools with biological water treatment and is the link for specialists from a wide range of sectors in the industry. The DGfnB organises conferences and seminars, commissions research and studies, and develops further training measures and certified courses. In addition, the DGfnB is involved in the development of new guidelines, including those on swimming pond construction and maintenance. The association supports the International Swimming Pond Congress, which takes place every two years.