Economy 631 people died cleaning sewers, septic tanks in last 10 years: NCSK Updated : September 20, 2020 02:19 PM IST Among states, Tamil Nadu reported the highest number of such deaths in total in the 10-year period at 122. The highest number of deaths were reported in 2019 at 115. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.