The majority of the systems use surface water to supply drinking water.
(The majority of the systems; use; surface water; to supply drinking water) Context(The majority of the systems use,List([0, 31))):(The majority of the systems; use surface water to supply; drinking water)
The majority of the systems use,List([0, 31))
The majority of the systems The majority of the systems
use use surface water to supply
surface water to supply drinking water
drinking water