Well Water for Buildings: Deep Well Pumps and Booster Systems

Some buildings, factories and campuses draw their water from their own well. It is tempting to ask the well pump to supply the taps directly, but the usual design splits the job in two.

	Deep well pump	Booster set
Job	Lift water from the well to a storage tank	Supply the floors at steady pressure
Runs	Long, steady runs to fill the tank	Follows the demand, minute by minute
Controlled by	Tank level	Pressure

Why not pump straight from the well?

• Demand in a building changes all the time, and a deep well pump should not start and stop with every tap
• The tank gives a reserve if the well pump or the power fails
• The well can be pumped at a rate it can sustain, regardless of peak demand

Size the deep well pump for the daily volume plus a margin, and the head to the tank inlet. If you do want the well pump to hold a pressure directly, a variable frequency drive with a pressure sensor is the right tool.