Copyright Holder: This Article is Licensed Under: © Badrus Zaman et al. (2023) Corresponding author’s email: badruszaman@lecturer.undip.ac.id Journal of Governance Risk Management Compliance and Sustainability, Vol. 3 No. 1 (2023) https://doi.org/10.31098/jgrcs.v3i1.1501 Determining the Illegal Waste Disposal in Coastal Area using Transect Walk Approach Badrus Zaman 1 , Anik Sarminingsih 2 , Ika Bagus Priyambada 3 , Mochamad Arief Budihardjo 4 , Bimastyaji Surya Ramadan 5 , Uus Uswatun Hasanah 6 1,2,3,4,5,6 Universitas Diponegoro, Indonesia 5 The University of Kitakyushu, Japan Received : April 12, 2023 Revised : April 28, 2023 Accepted : April 29, 2023 Online : April 30, 2023 Abstract The increasing population and anthropogenic activities in cities/regencies in Indonesia have caused many waste-related problems, which can trigger environmental and human health. In addition to population growth, rapid economic development has resulted in an increasing amount and type of waste. The coastal area is one area that still needs to get adequate solid waste services. There have been many studies on waste management. However, research has yet to examine the amount and composition of waste generation in coastal areas that have not been served by waste management.. This study shows the waste generation and composition trend in coastal areas that must be served in waste management and determines the appropriate waste management strategy. This research method uses a transect walk survey carried out by following a predetermined route in the area. Paths are made randomly by forming circles or straight lines for 10 km. The composition of illegal waste dumps found included leaves (69.02%), plastic (15.24%), branches and twigs (9.93%), paper and cardboard (3.75%), food waste (1.97%), and rubber (0.1%). At least 1.59 tonnes/day of illegal waste is estimated in Sidorejo Village. While this figure increases at the district level, the amount of unaccommodated waste is estimated at 19.85 tonnes/day. Efforts to handle waste that can be done are changing the mindset and paradigm of the community through an educational approach, improving the waste management system by providing waste facilities and reducing the amount of waste collected through a simple program (Reuses, Reduces, Recycle) that involves the community. Keywords: Transect Walk, Waste Generation and Composition, Waste Management, Coastal Area INTRODUCTION Environmental problems are one of the main issues in Indonesia; an example of an ecological crisis is unmanaged waste (Hadi et al., 2021). The increase in population and the diversity of activities in both cities/regencies in Indonesia have resulted in many related waste issues. In addition to population growth, rapid economic development has resulted in an increasing amount and variety of waste (Sailer et al., 2021). The waste problem is one of the city's problems. Currently, it cannot be processed, especially in coastal areas. Because the number of waste increases with altitude, the level of public consumption is related to the people's awareness of protecting the environment. Waste accumulation in coastal areas is from household waste and downstream waste that ends up in the sea. According to the People's Coalition for Fishing Rights, 1.29 million tons of waste is dumped into rivers and ends up in the ocean. It is estimated that around 13,000 pieces of plastic float yearly, increasingly threatening marine ecosystems' sustainability. Although the threat of damage does not only come from plastic waste, the impact caused by plastic waste is also very dangerous. One of the most hazardous pollutants for health is heavy metal. We know that one of the most harmful pollutants is heavy metals. According to the World Health Organization and the Food Agriculture Organization, it is recommended not to eat foods that contain heavy metals. It is because heavy metals have toxins that can accumulate in human organs, resulting in death. So it is necessary to hold services in the area. Some residents who do not receive this service will dispose of their waste by burning it in the field or yard of the house, burial, and indiscriminate disposal (Ramadan et al., 2022). Research Paper