Bricks are used to make smaller tanks of 0.5-3 m3 and natural stones are used for tanks of 3 to 120 m3. The construction starts by laying 2 PVC tubes on the ground (for the outlet and drain). Then stones are placed in a circle and secured with steel wire. The inside and outside of the tank is then plastered with cement. No steel bars are needed since the wire functions as reinforcement. Leaks are repaired with cement.
[[Image:Wire-cement_tank.PNG|thumb|right|150px|Filling Construction of a large storage tank of 1 m3 made of brickswith concrete blocks, wire and cement Tanzania (photo: Simavi) ]]