Rectangular vacuum tankThe all-in-one rectangular vacuum waste tank from Crescent Tank Mfg., in sizes from 100 to 2,000 gallons, features a low-profile design with low center of gravity for hauling portable restrooms, additional water tanks and any other equipment needed for the job. A separate freshwater poly tank is included. 585/657-4104; www.crescent-tank.com.Portable restroom service unitThe PMT980 portable restroom service unit from Imperial Industries is a steel two-compartment tank, with a 680-gallon waste and 300-gallon freshwater capacity. It is available in two models: a standard truck-mounted unit with a Masport HXLV4 vacuum pump or a modular unit with a Masport HXL3V
