Sewage is the liquid containing wastes/ liquid waste removed from the houses, factories, workshops, surface run-off water and agriculture. It is dark in colour and contains human faeces, urine, soaps, oils, grease, germs, chemicals, paints etc. These are called water pollutants or contaminants
World water conservation day
Water is a precious resource. It is like an elixir for life. Without water the survival of living organisms cannot be imagined. Every year world water conservation day is observed on 22nd march.