Standard DWA-A 100E Guidelines of Integrated Urban Drainage (IUD)

As a framework of action concerning the detailed regulations for urban drainage, the given Standard "Guidelines of Integrated Urban Drainage" is intended to • ensure comprehensive processing as "integrated urban drainage"; • contribute to sustainable wastewater disposal; • enable the superior aim of reducing the interferences that result from urban drainage for the natural habitat of water bodies and other uses of water bodies; • work towards a holistic view of the existing conditions and future developments and necessities for the purpose of the European Water Framework Directive (Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for Community action in the field of water policy); • help to define aims, strategies and priorities for future measures involving urban drainage; • support operators in developing a stable foundation for financial budgeting and in securing the drain and sewer systems' long-term maintenance of value. In this way, the approach and further development of integrated urban drainage according to consistent guidelines as well as the coordination of the single topics are to be ensured. At the same time the recommended measures intend to systematically create scopes for a flexible selection of technical solutions, measures and constructional systems. The guidelines allow a case-specific application of single regulations and are thus limited to general principles of urban drainage. They are intended to point out links between the basic tasks ("aims") of urban drainage, possible deficiencies in water quality and possible measures including their specific effects in order to balance or reduce these deficiencies. The development, dimensioning and constructive design as well as the operation of measures and systems is respectively dealt with in individual guidelines within the rules and standards.