All discharges of non-domestic wastewater to the ground must be registered with, and in some cases permitted by, DES's Water Division. In all cases state rules prohibit any discharge of non-domestic wastewater containing regulated contaminants above ambient groundwater standards. The discharge of large quantities of domestic wastewater is also registered by this program. Discharges of non-domestic wastewater to lagoons or via land application require a permit. This program also implements federal regulations pertaining to underground injection wells.
New regulations prohibit floor drains in motor vehicle facilities and ban large cesspools.