"WATER FOR ALL..." Rainbow Reservoirs is a Proudly South African manufacturer/installer of the highest quality ZINCALUME® anti-corrosive steel, sealed, sectional tanks for potable or process water storage solutions throughout Africa. Fully certified, engineer designed. Cost effective. Capacities from 9000 litres to 10 million litres. Applications: domestic, rural, communities, emergency water, municipal, agricultural, fire-fighting, mining, forestry, commercial, food-processing, industrial… Rapid installation anywhere, immediate use. Dual-purpose fire/potable water tanks.