New Delhi, May 31 -- The occupational identities of nearly 80,000 sewer and septic tank workers (SSWs) and 11,000 waste pickers have been verified nationwide as the Centre's NAMASTE (National Action for Mechanised Sanitation Ecosystem) scheme approaches its second anniversary in July, senior officials confirmed. A study group assessing the scheme's impact is expected to submit its report by December. "We have formed a study group to assess the impact of NAMASTE, the surveying is going on in a mission mode. 80,000 SSWs have already been validated along with approx 11,000 waste pickers," an official said. The official described the process as "laborious and large," citing challenges like ensuring "illegal immigrants engaged in such work espec...