The Biochemical Oxygen Demand (BOD) of Pune’s water bodies in 2020 reflects the extent of organic pollution in the city’s rivers and lakes. BOD measures the amount of oxygen required by microorganisms to decompose organic waste in water. A higher BOD value indicates that more oxygen is being consumed, leaving less available for fish and aquatic life, which can lead to declining biodiversity and poor water quality. Tracking BOD helps identify the impact of sewage, untreated waste, and other pollutants on Pune’s freshwater resources. This data, sourced from the Pune Municipal Corporation (PMC), provides valuable insight into the city’s environmental health and the urgent need for better wastewater treatment and pollution control.

The Chemical Oxygen Demand (COD) data for 2020 shows the level of both organic and inorganic pollutants in Pune’s water bodies. Unlike BOD, which focuses on biological decomposition, COD measures the total oxygen needed to chemically break down pollutants. High COD levels indicate contamination from industrial effluents, sewage discharge, and chemical waste, all of which reduce water quality and pose risks to aquatic ecosystems and human use. By comparing COD with BOD values, city planners and environmental managers can better understand the sources and severity of pollution. This data, reported by the Pune Municipal Corporation (PMC), serves as an important reference for developing sustainable water management and pollution mitigation strategies in the city. 

The Dissolved Oxygen (DO) levels in Pune’s water bodies during 2020 provide a direct measure of the water’s ability to support aquatic life. DO represents the amount of oxygen available in water for fish, plants, and other organisms to survive. Low DO levels are often caused by high pollution, sewage discharge, or excessive organic matter, which depletes oxygen during decomposition. When DO drops below safe limits, aquatic ecosystems become stressed, leading to fish kills and reduced biodiversity. Monitoring DO alongside BOD and COD gives a complete picture of water quality, as it shows both the pressure from pollutants and the actual oxygen available for life. This data is sourced from the Pune Municipal Corporation (PMC) and highlights the importance of protecting and restoring the health of Pune’s rivers and lakes.