Rainwater Managment

The company and its employees look back on several years of experience in holistic, modern and above all, in sustainable rainwater management. Throughout Europe, engineers, planning offices, specialized trade organizations, operators and investors have confidence in our experiences.

We offer products, concepts and solutions regardless of material, basic technology and production capacity. We focus on solutions and customers! Find out more about our competence in this forward-looking topic. Please feel free to contact us!

Our approach

In the last decade our cities have grown fast. To satisfy the rising demand of living space, green areas had to be used for building development. The consequence is an intensified land sealing which leads to a sustainable disruption of the natural water balance.

Fortunately, in the ‘80s a process of rethinking regarding the treatment of waste water management has begun. Regarding to the negative ecological and economic effects of the conventional principle of water diversion, a new solution had to be found. In contrast to the traditional diversion which has negative economic and ecological impacts, an urban drainage system could maintain the natural water cycle as far as possible.

Even the legislator recognized the necessity of an alternative (compare ATV 1999b). Furthermore, in 2007, the Water Framework Directive of the European Parliament and of the Council came into force (Guideline 200/60/EG from 12.12.2006). Therein measures are demanded which lead to a good chemical and quantitative status of groundwater and which ensure this permanently. in the beginning of 2007. In this, measures are required which lead to a good chemical and quantitatively condition of the ground water and to guarantee this permanently.

In the course of this, a legal regulation of this measures is also expected in Germany. In some regions of the country they are already existing. A decentralized infiltration is already required in for example development areas.

Also from an economic point of view the decentralized infiltration is useful. Although at first sight the diversion of rainwater into the sewer system appears to be easy, one should not overlook the related costs.

As for example the pipe diameter of the sewer system has to be dimensioned on the basis of the led amount of water. Rainwater collecting tanks have to be of an appropriate size to prevent a flooding even if there is an extreme rainfall event. Waste water treatment plants have to clean the polluted rainwater mixed with waste in an expensive procedure. Cities and states directly transfer the resulting costs to the consumers. A single family house with an average compacted surface has to pay up to 500 euros per year.

In combination with a rainwater management system which saves water costs and sometimes is state-subsidized, arising costs pay off quickly. Particularly in regard to rising sewage fees, such a system is worthwhile in a number of ways. In contrast to solar systems where the point of amortization and the time of replacement lie close together, rainwater management system and infiltration ditches have a durability of more than 50 years. Consequently they can be seen as an investment in the fut

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