14 Jan 2026
Explainer: What is Biological Oxygen Demand (BOD)?
Biological Oxygen Demand (BOD) is one of the most widely used indicators of water quality, measuring the level of biodegradable organic pollution in surface waters. In India, BOD has an enforceable statutory threshold of ≤ 3 mg/L, as notified under the Primary Water Quality Criteria for Bathing Waters (2000), and forms the legal basis for…