India's fishery sector loses over USD 2 billion due to untreated wastewater contaminating waterways, according to a study published on Wednesday. It also said the country suffers an annual economic loss of USD 246 million from diarrhoea caused by contaminated drinking water due to poor wastewater management. Launched at the World Ocean Summit in Japan by ocean health initiative Back to Blue and the Ocean Sewage Alliance, the study highlights the high cost of inaction in wastewater management in Brazil, India, Kenya, the Philippines and the United Kingdom. Untreated or poorly treated wastewater is a major source of pollution and disease. When it enters rivers, oceans and drinking water supplies, the consequences are severe. Among the five countries, India's fishery sector suffers the most, losing 5.4 per cent (USD 2.2 billion) of its economic value annually, followed by Kenya (5.1 per cent). Since India is a major seafood supplier, this threatens both domestic food security and exp