The Groundwater Program regulates discharge to groundwater under Part 31, Water Resources Protection, of the Natural Resources and Environmental Protection Act, 1994 PA 451 and Part 22 Rules. Groundwater staff review applications for authorizations to discharge wastes and wastewaters to the ground or groundwaters of the state. Authorizations include permits, self-certifications, and exemptions. Upon completion of an application review, staff make recommendations leading to the determination of appropriate action including issuance or denial of an authorization to discharge.

Field staff review effluent and groundwater sampling data. Field staff also inspect discharge facilities to ensure legal requirements are being met. Field staff review and issue permits for the construction of public sewerage systems under Part 41 of the NREPA. Field staff also review compliance with requirements for storage of hazardous material under the Part 5 Rules issued under Part 31 of the NREPA.

The Groundwater Program also provides toxicological support for the Waste Management Division.

The issuance of a Groundwater Discharge permit does not authorize violation of any federal, state or local laws or regulations, nor does it obviate the necessity of obtaining such permits, including any other DEQ permits, or approvals from other units of government as may be required by law.