A month ago, Rajasthan health card found Sambhar Lake to be highly polluted
Hindustan TimesJust days before the deaths of about 15,665 migratory birds was observed at Sambhar Lake, the Rajasthan environment department’s health card for the lake said its water was highly alkaline, saline, of poor quality, and prone to bacterial growth - pointing to damage inflicted by pollution. The health card found that Sambhar, India’s biggest inland salt-water lake spanning 24,000 hectares, had have high levels of salinity, high level of biological oxygen demand, and about 16% of the wetland area was covered by invasive living organisms. “This means the state pollution control board has failed to control illegal activities in the lake even after a strong order by the National Green Tribunal in 2017,” said environmental activist Babu Lal Jajoo. The tribunal, taking note of wetland authority reports by Vinod Kapoor in 2010 and by National Environmental Engineering Research Institute, Nagpur, in 2016, which pointed at high pollution levels in the lake, directed the Rajasthan government in November 2016 to stop all illegal commercial activities around the lake.