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sewerage
Bangladesh Inland Water Transport Authority was created in 1958.
Terence J. McGhee has written: 'Water supply and sewerage' -- subject(s): Sewerage, Water-supply engineering 'Solutions manual to accompany Water supply and sewerage, 6th ed' -- subject(s): Sewerage, Water-supply engineering
sewerage
they have to clean the dirty and used water
sewerage
Water and Sewerage Corporation.
F. J. J. Henry has written: 'The water supply and sewerage of Sydney' -- subject(s): Sewerage, Water-supply
water lily is the national emblem of Bangladesh
One way of preventing flooding in Bangladesh is to increase the population and to build less houses so the water can easily evaporate into fields and grass
Of course it is called "sewerage treatment"
Instead of private disposal of sewerage and waste the buildings are hook up to a municipal sewerage system that conveys the waste and storm water to another place of disposal