The rapid growth of the culinary sector in Kapanewon Mlati, Sleman Regency, has
significantly contributed to the local economy but has also led to an increase in
restaurant waste, posing a threat to the water quality of the Code River. This study
examines restaurant waste management as an effort to prevent river pollution using
an empirical legal research method through interviews with restaurant owners and
relevant government agencies. The findings indicate that while some restaurants
have implemented waste segregation, many have not fully adopted the 3R principles
(Reduce, Reuse, Recycle), particularly in recycling plastic and paper waste. The
main challenges identified include low awareness among restaurant owners,
inadequate waste management infrastructure, and insufficient government
supervision. Additionally, leachate from organic waste and improper disposal of
inorganic waste contribute to river pollution. This study recommends strengthening
regulations, enhancing collaboration between restaurants and waste management
facilities, and providing better infrastructure and education to improve waste
management. Effective implementation of these strategies is essential to reduce
environmental impacts and maintain the sustainability of the Code River ecosystem.