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Kotawaringin Barat is one area that has many great river, then known as the city waterfront or "city water", Bun Base as the capital city of the district has a typical water town/city riverbank. The rivers in this district include the River Arut and Kumai River. Arut River area, especially in the Village Pangkut already contaminated a number of hazardous substances. Based on the results of testing on the quality and content of the water indicate the presence of heavy metal content. From the statement of the Head of Supervision and Control of Environmental Baan West Kotawaringin that allegedly occurred as a result of pollution caused by mining activities dihulu river. Pollution caused by pollutants produced by the miners of the use of mercury or mercury and other chemicals. In addition to hazardous chemicals also contain ecoli in the water of the river If this molten metal into the human body, it will cause a very serious impact to health can even cause death. This is because mercury can affect vital organs such as kidneys, liver, heart and even brain. Research on mercury pollution in the Watershed (Watershed) Arut has been done several times by the Environment Agency Kotawaringin West. From the results of research in the Watershed Arut revealed that the mercury content has exceeded the safe limit. Threshold of mercury in raw water for drinking is permitted by Government Regulation No. 82 of 2001 at 1 ug / Liter. In terms of administration were the gold miners did not have the permission of the local government. Whereas the provisions of Article 1 of Government Regulation Republi Indonesia Number 75 of 2001 regarding the second change of the government's Regulation No. 32 of 1969 on the Implementation of Law Number 11 Year 1967 About Basic Mining has been determined on the Mining Business Permit Areas determined that each activity can be conducted after the Regional Mining get a business license from the Chief Mining Region or authorized official provide Mining Business License.
Kata kunci: penambangan emas, daerah aliran sungai (DAS)