Infiltration and storage tanks VV-Tank is a high strength modular stormwater infiltration or storage tank made from recycled plastics designed for as an at-source management system of rainwater from roofs and other impermeable surfaces. VV-Tank is used in the construction of open ground areas such as parking areas, driveways, playgrounds and sports fields. The load-bearing capability of VV-Tank may be increased by inserting additional proprietary "stabilizers". VV-Tank is available in several sizes and may be configured in multiple units to suit the specific requirements of a residential house to a large commercial or industrial development. VV-Tank is easily transported and assembled on site by clipping together interlocking panels. Assembled units can be configured to make it stable even under trafficable and high weight bearing load areas.