Damsak is a cost effective, patented bladder reservoir for nearly all liquids. Damsak is manufactured since 2007 from polyester reinforced polyvinyl-chloride (PVC) making it exceptionally strong. Special jigs are used to give the corners their unique and important shape. The special shape causes a Damsak to rise up while being filled without any additional structure needed. 

Damsak has a longer lifespan than conventional mesh and vinyl reservoirs. Our very first Damsak that was manufactured in 2007 is still operational and in very good condition.

Damsak also provides a less costly alternative to concrete reservoirs. Concrete reservoirs are expensive and may require extensive maintenance as they age. 

Algae will not grow inside a Damsak reservoir. Water is stored in a closed and dark environment. Damsak is a closed tank, there is no evaporation or contamination.