Study reveals alarming levels of physicochemical pollutants, pesticides and heavy metals in Arkavati
The Hindu
A report on pollution levels in the Arkavathy has revealed alarming levels of physicochemical pollutants, pesticides, heavy metals, and hazardous organic compounds that exceed both Indian and international standards and guidelines.
A report on pollution levels in the Arkavati has revealed alarming levels of physicochemical pollutants, pesticides, heavy metals, and hazardous organic compounds that exceed both Indian and international standards and guidelines.
According to a report by Paani.Earth on ‘Uncovering the Hidden Pollution in the Arkavathi: Emerging Contaminants Impacting Bengaluru and Beyond’, samples were tested for 65 unique water and 20 unique sediment pollution parameters.
Paani.Earth, which conducted this study in collaboration with the International Centre for Clean Water in February and March 2024, evaluated dry season pollution samples from seven sites along the Arkavati and its tributary, the Vrishabhavati.
This report then compared testing results to national and international standards and guidelines for freshwater and sediment pollution. The findings reveal alarming levels of physicochemical pollutants, pesticides, heavy metals, and hazardous organic compounds.
“Every single test site contained multiple pollutants exceeding recommended guidelines, posing major ecosystem and human health risks,” the report stated.
Regarding pesticides, the report found that harmful substances with health impacts, such as heptachlor and DDT, were found at levels as high as 25,022 times the United States Environmental Protection Agency guidelines.
“Heavy Metals: Toxins such as Mercury found in sediment at levels up to 26 times above Canada’s Sediment Quality Guidelines. Industrial Pollutants: Polycyclic aromatic hydrocarbons (PAHs) from industrial burning such as Dibenz[a,h]anthracene found at 3,076 times United States Environmental Protection Agency guidelines.Nutrients: Excessive phosphorus levels causing eutrophic conditions at all sites,” the report stated on the high pollutants.
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