Dear Supriya Singh,
Biochemical oxygen demand and Biological oxygen demand (BOD), has same it react on aerobic biological organisms to break down organic material so in ground water can analysis of MNP test in CFU levels, then we are conclude BOD, almost ground water it cant to lesser amount BOD level, because water in certain temperature over a specific time period.
Dear Supriya,
Yes of course. Landfill leachate is considered the main source of groundwater contamination. Organic pollutants in groundwater also result from leachates or percolates from domestic sewage or industrial effluents. The organic matter content of water affects the level of its dissolved oxygen and can be determined by measurements of the biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of the water. If the leachate contains high levels of organic matter, then it will also test high for BOD levels. Leachate may seep from a landfill and flow into a body of water such as a lake, river, or stream. It may also flow into groundwater, the water flowing beneath the earth’s surface through soil and rock. If leachate has high BOD levels and contaminates a body of water, it may cause the BOD of the water to be too high.
With my best regards
Prof. Bachir ACHOUR
As already explained the BOD depends on the level of organic pollutants in the well water. Phreatic aquifers are the ones which are most easily get polluted by the organic pollutants or leachates from - domestic sewage / toilets; solid or liquid waste disposal points; industrial effluents; etc.
Thanks Prof Achour & Prof Prasad for explaining in details the factor responsible for BOD / COD in ground water.
regards
Supriya Singh