Dewatering contractors are specialized trade contractors that provide services to remove water from construction sites, mines, and other areas where water accumulation is a problem. The process of dewatering involves the removal of groundwater or surface water from a site to allow for excavation, construction, or other activities. Dewatering contractors use a variety of techniques and equipment to remove water from the site, including pumps, wells, and drainage systems. They also provide services such as water treatment and disposal, and can assist with environmental remediation projects.