The study was initiated with the aim of determining the metallic trace elements (MTE) contents of the waters of the wells of the Kisanga district but also to treat these waters by coagulation-chelation of the MTE using the powder extracted from the dry seeds of Moringa oleifera (M. oleifera), with a view to making it potentially suitable for consumption. The treatment of water samples from the wells at a dose of 300 mg•L-1 of M. oleifera, and after 2 hours of decantation made it possible to achieve average reductions of around 92% in Cu 99 % in Pb, 97% in Co and 62% in Zn, 99% in Cd, 99% in Ni and 90% in Cr. This made it possible to obtain acceptable levels of MTE, according to the WHO standard for drinking water.

The treatment of water polluted with MTE and unfit for consumption makes it potentially drinkable by the coagulation-chelation of MTE. In view of the state of poverty of the populations of the KISANGA district unable to permanently buy well-conditioned drinking water. Viable methods for water treatment, in addition to their performance, must be simple, accessible and inexpensive.