Founded in 1965, Brentwood Industries manufactures high-integrity plastic products. The company has supplied millions of cubic feet of PVC media to the water and wastewater treatment industry. Brentwood's wide range of products include a large variety of surface media for applications, such as biological treatment of wastewater in trickling filters, anaerobic reactors, aqua culture and anoxic cells; enhancing water clarification as tube settlers in sedimentation basins and clarifiers; and thermal and cooling water as fill in cooling towers. Brentwood Industries North American operations include four principal manufacturing facilities. These are located in Reading, Pa., Hope, Ark., Martinsburg, W. Va., and Lebanon, Pa.