Natural System Instead of Public Sewer.

Hi everyone! We are working on previously undeveloped land project, which apply for case 1 “site with existing imperviousness 50% or less”. With the new project, the imperviousness will increase, and all the rain water from terraces, roofs and hardscape will be collected and filtrated (to remove suspended solids) and at the time, the water will be directed to an adjacent river as the only strategy in the stormwater management plan. Is this last point allowed to achieved the credit, as we are directing the water to a natural drain system and not to the public sewer? Thanks and regards!