However, due to lack of pressure in the main supply, the water does not naturally reach the top of the terrace. It either fills the tank very slow, or nothing happens at all. Hence people install pumps that pressurize the stream of water to the top no matter how high, in a fraction of a second. Water pumps are not only for the main water supply, it can be used to pump water from the well or maybe from an underground boring. A pump can be submerged to some extent in the water if it is for a well or a boring. Only a small pump is required for household purposes. However, for the commercial use, the water pump needs to be a huge one.
If you are looking for a domestic pump, you need to select something that can be used to fulfill your daily water consumption. Such pumps have less flow rate and consume less power. These are different from the ones used for agricultural purpose. The home use pump needs to pump water to a tiny area. There are varieties of domestic pumps like a Self prime regenerative pump that is meant for handling cold fresh water. It can be used for sprinklers in the garden area.
Centrifugal pumps are the most common one for household use. It can pump water free from abrasive, cold and fresh from the main supply line to your water tank. Submersible pumps are used to pump water from a bore well or a well. It is a wise choice as it does not require any priming since it is already immersed in water. For an agricultural purpose, there are submersible pumps of a higher power that needs to be used. Priming is not required for this case either. A centrifugal monoblock pump will need priming. It can pump water to a massive area in no time.
There are a few parameters you should look for in a pump like its vertical suction head. It is the distance between the tank for water delivery and the pump. The height of both of them needs to be matched to facilitate the process of water pumping. Seek the help of a pump vendor to suggest you a pump for your needs. Big companies that have far more pump usage even hire pump consultancy firms to help them purchase the right kind of pumps for commercial usage in a factory or open areas.