Efektivitas Pengawasan Pemerintah Daerah Terhadap Kualitas Air Sungai: Studi Kasus Pencemaran Sungai Brantas Jawa Timur

This study analyzes the effectiveness of regional government supervision over river water quality, focusing on the case of Brantas River pollution in East Java. Using normative juridical research methods with a case study approach, this research examines the role of regional government in monitoring and controlling river water quality through regulatory frameworks and institutional coordination. The study utilizes primary data from the Surabaya District Court Decision No. 08/Pdt.G/2019/PN.Sby and secondary data from relevant legislation and literature. The findings reveal significant weaknesses in inter-agency coordination and law enforcement mechanisms. The research concludes that regional government supervision effectiveness remains low due to limited human resources, weak institutional coordination, and insufficient political will. The study recommends strengthening inter-agency coordination, enhancing supervisory capacity, and implementing stricter sanctions to improve environmental protection.