Since 1962, vandervalk + degroot has grown to become the market leader in sewerage management, cleaning, inspection and renovation of various infrastructural works. The new era requires new methods and contract forms. vandervalk + degroot is active in sewerage management and has in-house knowledge about asset management of sewage systems. We carry out assignments for governments, companies and individuals. One of the unique things about our company is that our equipment is built and maintained in-house by Grootvalk bv, our equipment management department. Our core values are craftsmanship, safety, trust and innovation. Spread over 14 locations in the Netherlands and Belgium, the 400 employees are central every day.