The drainage of the building site is planned to be realized through a pump sump where the rainwater is collected. From here the waste water is pumped by a submersible pump into an adjacent field . Unfortunately, the pipes, installed by the city adminstration of Langenselbold in the course of the site development, are too small for the expected amount of water during a heavy rainfall. For this reason, the city is going to exchange the plugged pipes for ones with a larger diameter of the type “KG 2000” (see photos). This high-quality pipes made of polypropylene are in accordance with DIN EN 14758 and are supposed to be tight for at least 100 years. Best conditions for the next hundred years of Elementar Analysensysteme GmbH.