Mumbai: Indian cities and towns produce about 72,368 million litres of sewage per day (MLD)--enough to fill 30,000 Olympic-size swimming pools--but has the operational capacity to treat only 37% of it, and actually treats only 28%. Even the sewage treatment plants India has are often unable to cope during monsoons, are impacted by frequent power cuts, and unable to treat heavy metals and most pharmaceutical contaminants, reports show and experts say. More...