In Egypt, the 24,900 km2 Nile Delta represents about 60 % of the country’s total arable lands, and it is inhabited by about 30 million people. Water and air pollution continue to be a problem for the river. As development in the spheres of agriculture, industry, and urbanization have progressed among the human population, so too have the side effects associated with these practices increased, namely in the form of various pollutants. These pollutants range from agrochemicals to heavy metals to human waste products. With regards to the latter, many of the impoverished cities along the banks of the Nile cannot afford to build or maintain water treatment facilities, meaning that the water that the people living there use is dumped into the river untreated (click here for more information).