Sir: I have been living in Karachi for the last 18 years and if there is one problem that has not been solved, it is the sewage issue. It is so disgusting to see sewerage water on main roads and near different pathways. This contaminated water gives rise to a number of harmful diseases and makes it difficult for the people to live their lives. We cannot hold only the government responsible for this problem; rather the people themselves do not try to keep their environment clean. Also, a number of sweepers block the sewerage lines in order to earn more money.The sewerage system is worst in Lyari, Akhtar Colony and Mehmoodabad. The higher authorities controlling these areas are making very little effort to solve this issue. It is high time that the government should take some action regarding this problem.TOOBA ABDUL RASHEEDKarachi