Many cities and communities in Germany already have the jurisprudence following the conversion of the old sewage fee. This is now divided into drainage and rainwater. The diversion of rainwater into the public sewer is calculated by the connected surface and degree of sealing. With a typical sealed surface fee of 1 €/m², a 200 m² sealed surface adds 200 € and in 20 years costs 4.000 €. Since these costs are likely to increase considerably, provisions should be made at an early stage.
Does it pay off?
The installation of the system today can pay for itself in less than 5 years. This does not even take into account the price increases. It also makes sense from an ecological point of view to infiltrate clean rainwater. In this way, the rainwater is returned to the natural water cycle.
