EZflow engineered geosynthetic aggregate from Infiltrator Water Technologies is a lightweight, modular, easy-to-install drainfield alternative. The system is engineered for optimal storage and absorption efficiencies and improves drainfield performance by eliminating the fines and reducing compaction associated with stone. Modular construction allows configurations to match trench dimensions for most system shapes and sizes and enables contouring along sloped sites and around trees or landscaping. The lightweight system can be used for repairs and tight job sites and is easily hand carried into position, reducing time, labor and machine expense. Manufactured from recycled materials, the preassembled units include a 3- or 4-inch perforated pipe surrounded by aggregate and held in place with durable, high-strength netting. Approved in many areas with an increased efficiency rating and reduced drainfield size requirements, it is available in 7-, 8-, 10-, 12- and 14-inch-diameter bundles. 800-221-4436; www.infiltratorwater.com.