To make a tube well is often easier and cheaper than to make a hand dug well if cost for tooling and expertise is not in the way. A tube well is easy to seal of from contamination from the top. When the water table sinks, it should be possible to push the tube well pipe deeper in the aquifer.
Tube wells can for many reasons be preferred over hand dug wells, if not the cost for the necessary tooling stood in the way. A method to make a tube well with local means only, by the future user aided by the carpenter and the blacksmith could solve this problem. If only cheap and easily available materials would be needed, such a system would fulfill an urgent need of millions of people.
Such tube wells may also solve a problem of reinforcing hand dug wells against caving in when finally digging below the ground water table. When a tube well is made from this level deeper into the aquifer. the problem of caving in is solved at a fraction of the cost.
A hand dug has the advantage over a tube well that water can be collected with a rope and bucket. This assures availability of water, there is no need for a pump that may break down. A negative factor is that dirt from the rope and bucket as well from what falls into the well will endanger the safety of water for drinking. The application of this method of getting access to water should thus go together with the use of a cheap enough, reliable and quick and easy to repair hand pump.
The local carpenter can make battens of a special and precisely identical shape from sticks. Such battens can be tied together with plastic rope into a short tube. These tube elements can be interconnected into a tube. This interconnection is made strong and watertight by grouping the ends of the battens in the tube alternating a short equal length in and out. The ends of the tube well elements that face each other, can slide into each other.
This strong wooden tube can be driven into soft soil. While the soil is removed from the inside, the tube can be hammered further down with a heavy wooden ring.
This is even easier when the tube is driven into the water-carrying layer. In case the soil is soft and not stony, to use the tube well is cheap and easy compared to continuing hand digging in the water. In most cases concrete rings have to be lowered into the hand dug well to prevent caving in.
The use of the RopePump makes it safe to utilize a tube well for communal water supply, as this water pump can quickly and easily be repaired without special tools.