I don't understand this phrase "point of use water treatment". What does this mean? Seem grammatically wrong .

Question

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Household Water Supply:
• Master meters or other alternative community based network water supply systems
• Small-scale independent water providers
• Point of use water treatment
• Provision of water supply options information to low income residents

Answer 1

Point of use water treatment references a manner in which water is treated - in this case at the specific place water is drawn. An example would be a treatment system placed at the kitchen sink water intake to purify the water prior to its delivery through the tap.

Answer 2

Water treatment for specific areas...