The MARINER OMNIPURE® Series M55 marine sewage treatment units offer a unique approach to wastewater treatment on smaller vessel, workboat and yacht applications. MARINER OMNIPURE Series M55 features a bulkhead mounting arrangement — a first of its kind — that provides safe and effective treatment of the wastewaters on board your vessel. The system results in discharge effluent quality well within the MEPC.159(55) requirements.