In 2023, the Biochemical Oxygen Demand (BOD) for Geum River in South Korea was 0.9 milligrams per liter. BOD is the amount of oxygen that is required to break down organic matter in water, and is used as an indicator for measuring water quality. According to the source, BOD that is lower than one mg/L means the water quality is "very good" and that are no pollutants present in the water.
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Statistics Korea. (September 30, 2024). Value of Biochemical Oxygen Demand (BOD) for Geum River in South Korea from 2014 to 2023 (in milligrams per liter) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 21, 2026, from /statistics/1129931/south-korea-biochemical-oxygen-demand-geum-river/
Statistics Korea. "Value of Biochemical Oxygen Demand (BOD) for Geum River in South Korea from 2014 to 2023 (in milligrams per liter)." Chart. September 30, 2024. ÌÇÐÄÆÆ½â°æ. Accessed July 21, 2026. /statistics/1129931/south-korea-biochemical-oxygen-demand-geum-river/
Statistics Korea. (2024). Value of Biochemical Oxygen Demand (BOD) for Geum River in South Korea from 2014 to 2023 (in milligrams per liter). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 21, 2026. /statistics/1129931/south-korea-biochemical-oxygen-demand-geum-river/
Statistics Korea. "Value of Biochemical Oxygen Demand (Bod) for Geum River in South Korea from 2014 to 2023 (in Milligrams per Liter)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 30 Sep 2024, /statistics/1129931/south-korea-biochemical-oxygen-demand-geum-river/
Statistics Korea, Value of Biochemical Oxygen Demand (BOD) for Geum River in South Korea from 2014 to 2023 (in milligrams per liter) ÌÇÐÄÆÆ½â°æ, /statistics/1129931/south-korea-biochemical-oxygen-demand-geum-river/ (last visited July 21, 2026)
Value of Biochemical Oxygen Demand (BOD) for Geum River in South Korea from 2014 to 2023 (in milligrams per liter) [Graph], Statistics Korea, September 30, 2024. [Online]. Available: /statistics/1129931/south-korea-biochemical-oxygen-demand-geum-river/