A soakwell could be at least 9m long and positioned in such a manner that rainwater may run off into the system, preventing water from escaping the property boundary or accumulating under or near buildings. Soakwells are usually big porous vestiges installed underground that collect a substantial amount of water, allowing the water to settle afterwards and join up with the underground water table.
The soakwells can be made of plastic, fibreglass, PVC, concrete, brick, or more recently a framed structure covered with a soil-resistant fabric. The type of soakwell employed may be determined by where it may be located and the sort of traffic that may flow over it or the type of structure that may be built adjacent to it.