Question

suggest any four ways to utilise waste water

Answer 1

  *use  this for irrigation of public parks, recreation centres, athletic fields, school yards and playing fields, and edges and central reservations of highways.
 *for Fire protection.
 *can be used in industries as evaporative cooling water, particularly for power stations
 *can also be used for agriculture and aquaculture

Answer 2

Any four ways to utilise waste water are:-
(i)By giving the water to plants.
(ii)By using filtration we can make it pure.
(iii)By giving it to animals if it domestic.
(iv)By  using it for household works.