Population increase in the last 50 years Chennai with current population of 4,681,087 (4.6 million) is one of the largest cities of South India. The Population density of Chennai is 26903, which is currently largest in the state of Tamil Nadu. Chennai has witnessed a tremendous growth in its manufacturing, retail, health care and IT sector in the last 10 years., The fast growth of population has caused rapid in increase the domestic sewage pollution This present study deals with the wastewater sewage discharge to the Velachery lake near southern chennai. It is proposed to control the pollution through water hyacinth (Eichhornia crassipes). Phytoremediation considered the best technology in order to solve the sewage pollution. The main objectives of the study is to reduce the sewage effluents load in the lake by a continuous phytoremediation process using E. crassipes and second use the lake ecofriendly for Aquaculture and Tourism
