Desalination is generally not required. Borehole water is a water source extracted from deep underground through drilling technology. This water usually comes from underground aquifers, which can range in depth from tens to hundreds of meters. Because borehole water comes from deep underground, it is generally less susceptible to surface contamination and is considered a high-quality water source in many areas. Therefore, it can be drunk directly without desalination.

There are various methods to desalinate borehole water, mainly including physical treatment, chemical treatment and biological treatment. Physical treatment includes technologies such as filtration, sedimentation and membrane separation, chemical treatment uses chemicals to remove impurities from water, and biological treatment purifies water through the action of microorganisms.

Reverse osmosis water purification system for well water.