RDP provides innovative equipment for municipal water and wastewater treatment plants. Since 1978, RDP has earned a reputation for high quality, reliable products and the highest quality of service and support in the industry. RDP and it’s customers have won numerous industry and U.S.E.P.A. awards. Today, we are still located just outside Philadelphia. RDP’s main focus is solids handling and stabilization systems for wastewater treatment plants along with lime slaking systems for water, wastewater, power and industrial applications. For over 30 years, RDP has provided practical technologies that simply perform.