Analysis of water quality based on BOD and COD levels in Unisma hospital

Humans are facing worsening environmental problems, such as the depletion of clean water. Pollution that occurs either through soil, or poor sanitation, will affect the quality of water produced by the water sources around Unisma Hospital. This study aims to analyse the quality of water around the area of Unisma Hospital. This research is an observational research that is descriptive in nature. The study sample was taken from a well in the area of Unisma Hospital. Lab tests were carried out to measure the water quality, with the dependent variables being the form of BOD, COD, and PH of the water sample. The results of the study indicate that the parameters (BOD, COD, PH), when compared to the standard quality requirements based on East Java Regional Regulation No. 2 of 2008 concerning Management of Water Quality and Water Pollution Control in East Java Province, reveal that water quality is influenced by the flow of waste, garbage, and other pollution. The results of measurements of well water quality indicate that there are parameters that do not meet the quality standard requirements. Well water quality is influenced by toilet distance, domestic liquid waste and other pollutants. Water quality and quality of well water has decreased, so increased supervision of the quality of well water is needed.