Onsite sand filter system required for site with shallow water tableProblem
A planned sand filter septic system for an Iowa farm was redesigned to save money and reduce installation time. The system would require a concrete or PVC-lined box, adding to material and labor costs. The system was designed for a four-bedroom house to handle a flow of 300 gpd, with a peak-day flow of 600 gallons. A water table of 5.5 feet limited maximum trench depth to 30 inches.
Solution
A pit was dug 100 by 12 feet for installation of 280 feet of GEO-flow pipe, a 10-inch-diameter, single-wall, high-density polyethylene (HDPE)
