Md. Code, Public Utilities § 23–204

The Commission may grant water or sewer service connections, hookups, or authorizations for service or otherwise extend water and sewer service to a new development in the Prince George’s County portion of the sanitary district only if the development is in conformance with adopted and approved plans, programs, and policies of the county or other regulations that the county may include in an adopted and approved comprehensive water and sewer plan, amendment, or revision.