These units are IMO/USCG certified Type II MSD, and they also meet all EPA regulations. They are low maintenance with very few moving parts and operate with very low power consumption. If system is properly setup and operated then there is virtually no odor. These units operate with either fresh or saltwater. Our rental units offer from 500 to 3,000 gallons per day capacity. HB Rentals also has certified technicians on standby who are capable of installing these units offshore for our customers. HB Rentals offers a variety of auxiliary equipment to help support any and all of our customers' accommodation needs. Whatever your needs, we have the equipment and technicians on standby in order to deliver quality equipment in a safe and timely manner.