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Morokrembangan bozem is one of the largest bozem in Surabaya with an area of ± 78.69 Ha which is designated as a flood controller in the city of Surabaya. However, the condition of Morokrembangan bozem experienced a decrease in water quality due to the inclusion of pollutant loads originating from waste discharges carried by the drainage channels entering Bozem Morokrembangan. The research can be useful for Surabaya Government to return the function of Morokrembangan bozem. The results showed that the water quality status of Morokrembangan bozem was moderately polluted with the highest pollution load coming from Kali Purwodadi with COD concentration of 28,283 mg / L, BOD 5  7,491 mg / L, Ammonia 6,18 mg / L, and Total Phosphate concentration of 6.18 mg / L. The total pollution load that enters the Bozem comes from settlements averaging 99.87 Tons/year and industry averages 0.0028 Ton/year with a total waste load based on sub-dynamic simulation models an average of 26,923 Tons/year. Management efforts can be carried out using an optimistic scenario by building a communal WWTP in the Krembangan District that does not yet have a WWTP and implementing a 3R program to reduce solid waste (garbage), make efforts to manage environmentally friendly land, and increasing community participation.

iop conference series. earth and environmental science

Study of The Quality and Status of Water Quality on Reservoir Water Management Efforts Using a Dynamic System Approach (Case Study: Bozem Morokrembangan)