A typical well is shown in fig. The average depths of these wells are around 5-6 m which needs around 7 to 8 rings. As the rings are produced for this mass requirement in bulk at a central supply station, the cost is considerably low and is convenient, quick and easy to construct. In places where the water table was deeper and below rock level the individual wells are unaffordable for the farmer, and larger community wells are provided at one per 6 families. They are about 3 m in diameter up to about 9 m in depth and with 225 mm rubble masonry wall up to 0.75 m above the ground.
Farmers contribute to the construction by providing the labour required.
In areas where the ground water table is much deeper, tube wells fitted with simple Indian made hand pumps have been provided. Water Resources Board of Sri Lanka and a few private firms are engaged in its construction. Average depth of these tube wells are 40 m most of which is in rock strata. One or two such wells are provided per settlement where it is necessary, at appropriate locations. The quality of the ground water is good in most of the hamlet areas and is safe for consumption.