Dr. Pathak is the founder of Sulabh International Social Service Organisation which is spearheading a toilet revolution in India using indigenously-developed, cheaper and eco-friendly technology. The eco-friendly Sulabh Sauchalya invented by him requires only one litre of water, thus directly conserving the environment.In 2013 the French Senate had honoured him with the ‘Legend of Planet’ award. He has also been awarded the prestigious 2009 Stockholm Water Prize. The award, akin to a Nobel Prize on environmental issues, was presented to him by Prince Carl Philip of Sweden. He was awarded with Padma Bhushan by the Indian government, besides several other international and national awards.