This is with reference to "Shit it's profitable" (November 15-30). Dumping untreated human excreta in a farmland can be dangerous. This business will get more acceptability only after individual owners treat all the dirty water to the zero per cent contamination level and get it tested from approved public health lab. Only then should a person be allowed to empty the septic tank. The Bangaluru Municipal Council must stop this health hazard and frame proper guidelines for dumping effluent in farmland. If we can do that, burden on sewage treatment facilities can be reduced while farmers profit.