Pure aromatic polyurea modified specifically to meet requirements for use in coating substrates utilised for storage and transmission of potable and drinking water. Nukote ST-pw is tested and approved by many countries for applications on substrates in contact with potable water and food products. It is a plural component, fast set, 100% solids product suitable for concrete, steel, and other substrates as a waterproofing membrane, anti-corrosion and abrasion resistant liner. This aromatic Polyurea Elastomer also displays good chemical resistance, thermal stability and UV resistance. It can be applied by spray in single or multiple layers to form a tough but flexible homogenous membrane.