This dataset contains biological parameters of surface water quality, collected manually on a monthly basis by the Public Health Engineering Department. It includes key indicators such as Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Fecal Coliform, and Total Coliform. Each record consists of the date, station identifier, supporting assessments of microbial contamination, organic matter levels, and overall water quality. This dataset is crucial for monitoring ecosystem health, pollution sources, and public health risks related to waterborne diseases.