Casing pipe and screen. ensure that the water well remains a perennial source of clean water. Some Year ago the choice was only was metal pipe and Screens. The disadvantages were corrosion of casing pipes, determination of screens and formation of bacteria, resulting in abandonment of wells and, even worse contamination of the water source.
PVc well casing and screen is widely used because it is light strong, easy to install durable corrosion resistance and relatively inexpensive . The choice of any material depend upon its strength and weakness in relation to the particular intended use .Condition at a water well drilling site and within a borehole or generally aggressive. PVC casing and screens is easily able to with stand most condition but it is important for a driller engineer or hydro geologist to be aware of conditions or circumstances that might prejudice the integrity of PVC and consequently the bore hole. The aim is to provide a basis for the correct selection and handling of PVC casing and screen.