As the area of paved surfaces in the Netherlands continues to increase, it is becoming increasingly difficult for rainwater to penetrate the soil and reach the groundwater, thus causing groundwater levels to drop. For this reason, in the Netherlands the policy is to allow as much rainwater as possible to infiltrate into the ground. This includes redirecting the flow of water from roofs and pavements so rainwater is not transported to sewage treatment plants but instead is allowed to infiltrate into the ground via the infiltration system. Van Walraven offers a wide range of products for this purpose, from infiltration crates and infiltration pipes to geotextiles and miscellaneous accessories. Please contact us for expert advice and capacity calculations. In addition, at Van Walraven you're at the right address for all the necessary equipment to connect the system.