1.   Mixed with water, aluminium sulphate becomes increasingly acid.

2.   Most of the aluminium contamination is due to aluminium sulphate added to water to remove cloudiness.

3.   The low-level, continuous exposure arising from aluminium sulphate in water purification is very worrying.

4.   Another area of interest is to set up a factory to produce chlorine,aluminium sulphate, polymers and other chemicals related to the industry.

5.   There is no running water in Kigali, because of a shortage of aluminium sulphate which helps cut down impurities.