<![CDATA[Background: Poor water quality can cause health problems for all hospital residents, both people with low immunity and healthy people. The purpose of this case study is to analyze the risk level of exposure to iron, manganese, and zinc metal levels at the Bangka Belitung Islands Province Mental Hospital. Methods: This study is a quantitative descriptive study with an analytic approach to environmental health risk analysis. The study design is crosssectional. The sample is the quality of iron, manganese, and zinc in clean water, the result of a clean water quality examination at a mental hospital in Pangkalpinang. Results: The results of the case study showed that the non-carcinogenic (intake) value in individuals for iron metal was 0.00074 mg/kg/day, manganese was 0.00024 mg/kg/day, and zinc was 0.00098 mg/kg/day. The risk quotient obtained is less than one. Conclusion: The concentration of iron, manganese, and zinc is below the environmental quality standard, so it is safe for employees who consume it. Hospitals are advised to aintain clean water quality by complying with regulations and conducting regular water quality checks.]]>
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