Filtasock is an innovative filtration system with significant economic and environmental benefits. The Filtasock filtration system is one of the most simple and economical ways of dealing with contaminated water being pumped out of manholes, vaults, sumps, bunds, retention ponds and ditches. It uses multi-stage filtration to remove hydrocarbons and sediment to almost non-detectable levels. Extremely efficient, it can be used in a wide range of de-watering applications without slowing up the pump.