Customers area drain located at bottom of stair case had large amounts of debris and dirt inside of catch basin. Removed debris and dirt and attempted to perform camera inspection. Camera only entered approximately 1’ before hitting what appeared to be concrete or some kind of cap. This leads me to believe this drain is not in service and serves no function. Inspected both entrances leading downstairs and saw that all entry ways leading to stairs were graded away from stairs which directs water away from entering stair case. If tenants have issues with water draining down stairs and entering the units the only way to direct water away from units was be to install a catch basin with a pump that pumps water out of stair case area and terminates away from stairs.