The project was designed to carry 90 million liters of water to the city each day, delivered from three reservoirs that sit on the top of a mountain adjacent to the city.
The plant is located in Asare village, about 10 kilometers from Sokoto.
The project cost 2.6 billion naira ($13 million) and was completed after 12 months' work in late 2013.
All the equipment and machinery used in the Asare water project came from China.