Biological pollution another worry for city

With garbage piles increasing over the years and more sewage flowing in open canals, the amount of bacteria and fungal microbes in the air is on a steady rise.Since 2010, the Department of Environmental Science in Bengaluru University has been studying the amount of bioaerosols — a term to cumulatively measure microbial pollutants.Eight years of data has shown that the amount of bioaerosols has been increasing steadily — to nearly nine times the prescribed limit of WHO’s limit for indoor bioaerosol pollution. The pre-monsoon season, characterised by rising temperatures, sees the most bioaerosol while fungi thrive during winters when humidity drops. Researchers say biological air pollutants, which are not monitored by pollution control boards, could lead to adverse health effects.

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