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The various micro-organisms are used to identify contaminated water. By the help of biosensors, drinking water pollution can be estimated. Rising environmental pollution is badly affecting water. Drinking contaminated water causes serious diseases in human beings as well as in animals. Microorganism in contaminated water can spread serious diseases. Biosensors are genetically modified to identify the occurrence of heavy metals, chemicals and toxins in contaminated water. Different microbes are used as biosensors such as Escherichia coli, Algae, Fungi and Clostridium etc. All these biosensors help to detect water pollution by different ways. For example, algae can detect water contamination by fluorescence during photosynthesis. Most rural areas are being affected by contaminated water. Most of the people living in rural areas are being affected by the polluted water as clean water is not available in these areas. People living in rural areas use water that looks clear but contains micro-pathogens that can cause dangerous diseases. Biosensors are important for identifying contamination, Due biosensor, can easily deduct pollution. Water is very important for the survival. Drinking contaminated water can cause serious illness. Therefore, clean water is very important.
Islam et al. (Sat,) studied this question.