Of late there is seepage of surface water into my open well. This is further aggravated by agglomeration of decaying leaves from a neem tree over the well itself. Its an old well - about 30ft across - beyond my resources to cover it; Besides leaves are not the only issue. As a consequence, every few days I would lose prime on the pump. I suspect part of the seepage is ground movement on account of earthworks to construct a flyover, and other highrise buildings in the neighbourhood.
The pump itself is an open well self priming type which has served almost faultlessly o er 2 decades. The outlet is bifurcated; my temporary solution has been to run the ground floor pipe back into the well parallel to the footvalve. This works for now because the ground floor does not need water much, and perhaps because the sediment in the well is not so dense.
If the density ever increases, how do I prevent the footvalve from sticking open?