Cisterns and Springs
Roof-catchment cisterns are systems used to collect and store rainwater for household and other uses. Such systems basically consist of a house roof, or catchment, and a storage tank, or cistern.
Springs occur wherever groundwater flows out from the earth’s surface. Springs typically occur along hillsides, low-lying areas, or at the base of slopes.
This publication explains how to construct wells and springs to minimize the possibility of harmful microorganisms entering water supplies. It also discusses other measures that will help keep drinking water biologically safe.