These low-maintenance treatment systems remove oil from wastewater. The systems are applicable for industrial processes, maintenance area floor drains, vehicle washing, bilge water treatment and more. The treatment systems use a combination of treatment technologies, including oil-water separator, filtration and oil adsorption media. The systems are fully automatic and require no chemical additions. This keeps operation, maintenance and labor costs to a minimum. CARBTROL Corp. 955 Connecticut Ave., Suite 5202 Bridgeport, CT, 06607