ARCADIS US is the American arm of Netherlands-based environmental and engineering services company ARCADIS. Founded in 1957, the firm provides consulting, design, engineering, and project and construction management services related to infrastructure, environment, water management, and buildings. Services include the designing of groundwater monitoring and treatment systems, feasibility studies, construction management, and the operation and maintenance of remedial technologies. The group also offers risk evaluation and assessment services, bioremediation services, regulatory compliance support, and testing and sampling services. ARCADIS US accounts for more than half of its Dutch parent company's sales.