People have constructed their houses over water drains, ditches, and in wetlands. To make it even worse, there is poor waste disposal from their residences; most just dump it outside, where it ends up blocking the few available drains that would have helped drain the water to larger water channels.
Watu wamekuwa wakijenga nyumba zao juu ya maji machafu, mitaro, na katika ardhi oevu. kufanya hali kuwa mbaya zaidi, kutupa taka ngumu ovyo kutoka kwenye makazi ya watu, ambapo huzuia mitaro ya maji machafu kutokufanya kazi ipasavyo.