An attempt has been made to study the impact of urban wastewater irrigation on summer paddy productivity, varietal response and soil properties. Paddy and soil samples were collected from selected peri-urban villages of Bhubaneswar, India, from fields receiving contrast irrigation sources (urban wastewater and river water) under similar agro-climatic and socioeconomic conditions. Major plant nutrients content were higher in wastewater irrigated soils, whereas pH was lower. Wastewater irrigation increased grain and straw yield.

The current study is on East Calcutta Wetland (ECW) which is a model for multi-use resource recovery system with activities like pisciculture and agriculture. The entire city's soluble waste is disposed into the raw sewage canals which finally drains into the shallow, flat bottom fish ponds called Bheri. These sewage fed fisheries act simultaneously for the purification process like removal of heavy metals, coliform reduction as well as fish production at a commercial scale.