Most town and community water supply systems are checked by professional staff who are required by law to ensure that the water supplied to homes is safe for drinking.
(Most town and community water supply systems; are checked; by professional staff) (professional staff; are required; by law; to ensure that the water supplied to homes is safe for drinking) (the water; supplied; to homes)
Most town and community water supply systems professional staff the water
are checked are required supplied
by professional staff
by law to ensure that the water supplied to homes is safe for drinking
to homes