A real very brave people. No safety equipment at all.My fields are remote and in Black cotton soil. Heavy vehicles get stuck. This is good idea. They are using GI pipes if we have Plastic pipes, we can avoid lots of drudgery.In Malaysia we place a precast reinforced concrete (RC) cylinder upright on the site. We start digging on the inner ground and the heavy cylinder will lower by itself into the ground. When the cylinder is level with the ground place another cylinder on top and so on until clean water at the deeper level is obtained. Water will seep in between the cylinders into the well. The top few cylinder joints can be joined with sealant to prevent dirty water of top levels seeping in. No danger of wall collapse.