The Concrete Soakwells are traditionally strong and durable. They are designed for holding larger amounts of water and draining at a slower rate. This is particularly better for areas where the soil is less permeable, such as clay, limestone and hard ground areas. If you are unsure about which type of Soakwell will be better for your area, contact us today. Concrete Soakwells are more expensinve to install as overheads increase with the need of an excevator, costs to deliver stock and install. Concrete soakwells are best for new builds in Perth as installation of the Soakwells are generally at slab stage, so access is not an issue and the risk of hitting service lines is reduced. For existing residential jobs and any job where access could be an issue, polypropylene tanks are the best way to go.