secunderabad an uncovered manhole greets visitors at old vasavi nagar in secunderabad cantonment similarly an uncovered manhole at railway colony has been causing inconvenience to residents due to the foul smell from it these are not isolated cases as uncovered manholes or those with damaged covers can be found even on main roads in the cantonment secunderabad cantonment boards health sanitation wing handles the sewerage system whose lines run over 500 kilometres with three jet machines scb officials admit that they were receiving 15 to 20 complaints on an average every day regarding sewer water overflows or choking of the sewer network according to scb official records there were 50000 manholes spread over 500 kilometre length of sewerage network in the cantonment scb officials said they would not allow manual cleaning of choked drains in the cantonment like ghmc and hmwssb cantonment board does not have a sewerage system like trunk mains and lakhs of manholes in the existing network as manholes are not deep scb uses jet machines to clean choked manholes and sewer lines scb senior superintendent swm m devender told toiregarding uncovered manholes except a few over 80 of them have covers whenever we receive complaints of uncovered manholes sanitation workers fix the covers as a result till now no single manhole death has been reported said the scb officialsocial worker t satish gupta said that though residential welfare associations rwas had given representations about uncovered manholes it fell on deaf ears as a result manholes have become death traps in the cantonment he said officials have to inspect every manhole for peoples safety he said