The shipping industry worldwide is acting in good faith to comply to the International Maritime Organization (IMO) Resolution MEPC.107(49) for pollution prevention equipment for machinery spaces of bilges of ships. Regulations mandate that all vessels must operate an onboard type approved bilge water treatment system. This system must be able to treat oily waste water to comply with requirements of oil-in-water content of 15 ppm or less for overboard discharge. Bilge water treatment systems undergo rigorous testing to obtain IMO type approval certificates.