Risk Analysis of Manganese In Clean Water In The Community of Supul Village, South Central Timor District

Background. Manganese is an essential metal needed by the body to help the liver and brain performance. Excess Manganese can cause disease "manganism". Supul village was chosen because the location was close to the manganese mining area. Purpose. This study was to determine the risk of manganese in clean water in the community of Supul Village, South Central Timor Regency. Method. This research is a descriptive study, with a survey method. The research variables are the levels of manganese, manganese exposure and risk characteristics of manganese. The research samples were 9 clean water facilities and 84 people. Manganese levels are obtained through laboratory tests. Manganese exposure is obtained by calculating the intake of non-carcinogenic manganese risk agents. Risk characteristics are obtained with risk numbers (R). Data were analyzed using environmental health risk analysis. Results. The results of the study, the average level of manganese in clean water was 1.7741 mg / l. exposure Manganese in adults weighing 11 to 76 kg, at a minimum concentration of 0.032795 to 0.005178 mg / kg / day, at a maximum concentration of 2.131484 to 0.336550 mg / kg / day and at an average concentration of 0.283534 to 0.044768 mg / kg / day. Manganese exposure in children weighing 11 to 40 kg, at a minimum concentration of 0.017888 to 0.004919 mg / kg / day, at a maximum concentration of 1.162628 to 0.319723 mg / kg / day, at an average concentration of 0.154655 to 0.042530 mg / kg /day. The risk characteristics of manganese exposure in adults with a minimum concentration were declared safe, at a maximum concentration of 56 respondents it was not safe, at an average concentration of 1 respondent was not safe. The characteristics of the risk of manganese exposure in children at a minimum concentration are declared safe, at maximum concentrations it is declared insecure, at an average concentration there is one unsafe respondent. Conclusion. Characteristics of the risk of manganese exposure in adults with minimal concentration are declared safe. The characteristics of the risk of manganese exposure in children at maximum concentration are not safe. The community is advised to treat clean water before consumption