How does one know use a submersible or a surface pump?

Q: How does one know use a submersible or a surface pump?

A: The selection is based on the groundwater level and the water source. In the case of a borewell with a water table deeper than 10-15 metres, a submersible pump is used. If it is an open well, pond, etc, then using a surface pump is better. Also, the surface pump is installed when the water level is less than 10 metres.

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