COMPARISON WITH VARIOUS SYSTEMS

Research indicates that in Africa alone 90% of the hand pumps already break during the first few years and require maintenance as well as spare parts, in order to be function again for a short time.

In wind-poor regions water windmills are not efficient, as they can't provide a continuous water supply. In addition, continual maintenance is required in order to maintain efficient operation.

A large proportion of the submersible solar pumps are manufactured  in China. Here the NSP Solar Water Pump is clearly miles ahead in terms of quality.

Significant feature-related differences are to be found in the saltwater resistance, something which a submersible solar pump cannot provide. They also experience a large degree of wear-and-tear when used with sandy water.

Electric generator-driven water well pumps have high running costs, as the fuel must be refilled daily. They put a strain not just  on the environment, but also on the financial resources of the people.