ISSN 2671-9274 Vol.7 No.10 / december 31 2019 Research Briefs KEI Assessing the Feasibility of Strengthening Point Source Nitrogen Management Policy Writing. Jong-Ho Ahn, Dae Ho Han, Joo Hye Jo, Soo Bin Kim, Sang Min Lee Nitrogen circulates through the atmosphere, land, water, and ecosystems. Especially, when the concentration of nitrogen in water is increased, it causes eutrophication and red tide which deteriorates water quality, toxins to human and aquatic ecosystem, and fish mortality. This ultimately leads to socioeconomic problems such as increase in water purification and sewage treatment costs to minimize the effect of nitrogen pollution. In particular, the previous studies show that the growth of green algae and cyanobacteria can only ultimately be controlled when nitrogen is managed in parallel with phosphorus management. Recently, the need for strengthening nitrogen management has been presented in national plans and related policy research such as “2050 Sewer Policy Vision (2012)”, “Roadmap for Evaluating and Management of Pollutants in Public Water (2014)”, “The Second National Sewerage Comprehensive Plan (2015)”, and “National Water Environment Management Plan (2017)”. However, the water quality management policy for the public waters has been promoted mainly as a limiting factor to control the occurrence of green algae and eutrophication, and thus the nitrogen management has been somewhat passive. ◆ The domestic nitrogen inflow and emission status are surveyed based on the results of the previous nitrogen mass balance study and the analysis data of the “National Water Environment Management Plan(2017)”. As of 2014, annual domestic nitrogen inflow and outflow were 6.02 million tons and 1.36 million tons, respectively. The largest amount of nitrogen was released to 01 Research Briefs