Sanitary wastewater discharges regulated by the Washington Suburban Sanitary Commission (WSSC) and the Maryland Department of the Environment (MDE) establish specific conditions under which wastewater can be discharged. This fact sheet summarizes general regulatory requirements for wastewater discharge and identifies compliance management practices for facility personnel.
University of Maryland, Environmental, Safety and Health Management Policy.
General: The WSSC regulations limit the types of materials that may be discharged into the sanitary sewer and may require pretreatment and facility permits on a case-by-case basis. At the University, the primary contaminants that must be kept out of the wastewater stream include volatile organic compounds, heavy metals and acidic or caustic discharges.
Specific discharge prohibitions: A detailed list of prohibited discharges, including numerical limits for heavy metals, pesticides, solvents, organic and other compounds is included in the above-referred WSSC regulation. The following is an abbreviated summary of prohibited discharges:
University personnel involved with wastewater discharge activities should be trained to comply with applicable requirements.
WSSC must be notified of any non-compliant or accidental discharges including spills, upsets, slug loads, etc. The Department of Environmental Safety (DES), provides telephone and subsequent written notification.
Inspections may be required by WSSC on a case-by-case basis. Wastewater pretreatment systems must be inspected and maintained according to applicable regulations.
Wastewater pretreatment system operating, maintenance, and calibration logs should be maintained for three years. Discharge reports should also be maintained for three years.