Emphasis Preaching Journal

Water in third world countries is a problem. It's not a matter of turning on a faucet. From Cairo to Jakarta, if one does not live on the bank of a river, most water is stored in cisterns, to be filled with rain during the monsoon-filled winters, and horded through the hot, dry summers.
A well-built cistern will keep water much cooler than the summer air, providing a refreshing drink or relief from the hot sun if splashed on. But cisterns also have problems, from mosquitoes laying eggs on the surface to algae, leaves and sludge building up on the walls and fouling the water.