Jurnal Teknik Lingkungan Volume 26 Nomor 2, Oktober 2020 (Hal 49 – 60) 49 DAMPAK PEMUKIMAN DAN KEGIATAN DI TEPI SUNGAI TERHADAP KUALITAS AIR SUNGAI BARU BARAT THE IMPACT OF SETTLEMENT AND ACTIVITIES AT THE RIVERBANK ON THE WATER QUALITY OF BARU BARAT RIVER Ariane Pratiwi 1 , Melati Ferianita Fachrul 2 , and Diana Irvindiaty Hendrawan 3* Environmental Engineering Department, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Indonesia Email: 1 ariane.pratiwi.ap@gmail.com, 2 melati@trisakti.ac.id, and 3 dianahendrawan@trisakti.ac.id Abstract. Baru Barat River is a man made river for flood and irrigation control. This study aims to determine the effect of activities on the bank on Baru Barat River on the water quality. Identification of activities is carried out along the bank of river. Water quality parameters are compared with the Governor of Jakarta no. 582 year 2005. The status of water quality is determined using the Pollution Inde (PI). The activities around the Baru Barat River are settlements, officem workshop, schools, deales, food stall, laundry, shops, beauty salons, guesthouses and gas station. BOD concentration range from 8.4-43.7 mg/L with a quality standard of 10 mg/L and COD range from 16-99.2 mg/L with a quality standard of 20 mg/L. Concentration of BOD and COD that exceed of quality standard at almost all sampling ponts. The level of pollutionj in the Baru Barat River is moderate polluted. The main problem at Baru Barat River are the presence of several illegal waste point left from activities that eventually enter the river and the absence of waste water treatment. The concept of community based must be implemented to waste management and communal wastewater treatment that are easy, inexpensive and integrated with the landscape. Keywords: Baru Barat River, river bank, water pollution index, river quality, domestic waste water INTRODUCTION This densely populated residential area is due to the limited fulfillment of urban land which is increasing every year, one of the housing needs in Jakarta. Jakarta's high population growth rate has caused changes in areas that should have been green open spaces such as riverbanks into built up areas. Physical damage to watersheds will damage the landscape and ecosystems along the river. Activities such as road construction, housing, trade centers will drastically change the geomorphology and hydrology of rivers and other catchments like that. As a result, it will change the structure of plants and water, which will result in water absorption into the soil and movement of water above the ground. These changes will have an impact on the lack of water supply during the dry season and floods in the rainy season The buffer zones in the settlement area are required. Thi riparian serves to control the water cylcle, as water supply maintaining aquatic habitat (Fitri et al, 2017).