Dear Mr. Mizero, problem ...
Dear Mr. Mizero,
problem with Arsen and Fluoride at Africa is well known. By this link you find publication about examination of the situation with recommendations on sampling, behaviour and treatment. http://www.eawag.ch/en/research/humanwelfare/drinkingwater/wrq/geogenic-contamination-handbook/
Attached please find Company description who offers Fluorid removal.
Best regards
Matthias Worst
Bavarian Environment Agency