If the estimated discharge of groundwater is greater than 10,000 gallons per day, the applicant must also obtain a groundwater discharge permit from the New York City Department of Environmental Protection (DEP). The permit will allow the applicant to discharge groundwater to the City sewer system (Sanitary, Storm or Combined sewers) for a limited period of time. To obtain a groundwater discharge permit, the applicant must submit a Temporary Discharge of Groundwater into the City Sewer System, linked below under Application Materials.
Water and Sewer Permitting Section
59-17 Junction Blvd, 3rd Floor LR
For further assistance, please call 311 and ask for: Construction Groundwater Discharges