Mohamed AbdeI-Monem　Meng Haixing

SAFE water is a basic human need, but peoplein many countries don't have sufficient access to safedrinking water. Kenya is one of these countries. Toprovide people with safe and high quality drinking water,Nairobi City Water and Sewerage Co. (NCWSC), whichprovides water and sewerage services under the direc-tion of the Nairobi City Council, has to constantly moni-tor and test the city's water quality, according to thecompany's official website.