sealed surfaces - advice on reducing the wastewater charge from precipitation water Assistance in filling in the relevant forms for the collection of the split wastewater charge

Sealed areas on the respective properties were recorded in terms of area and categorised according to the degree of sealing. The client was advised which areas could be converted accordingly in order to reduce sealing. The aim was to retain as much precipitation water as possible on the property, to allow it to seep away and to discharge as little as possible into the public sewer system.

Asphalted areas were removed, e.g. converted into paved areas with joints, rainwater was diverted, storage systems were installed and swales were dug out for infiltration on the site.
Through the implementation of these measures, the area affected by runoff was reduced, resulting in a corresponding reduction in the developer's wastewater fee. The split fee also creates an incentive for disconnection and unsealing measures that promote the natural water cycle on the property. Especially in the case of heavy precipitation events, it is important that the water is retained as widely as possible instead of being quickly drained away in order to avoid the catastrophic floods of the past.