GREATER NOIDA, Jan. 9 -- The Greater Noida Authority on Thursday said preliminary checks had not found any sewage mixing in the water supply, even as residents of Delta 1 reported cases of illness, including diarrhoea, vomiting and stomach ache, after complaints of foul-smelling and allegedly contaminated water earlier this week.

According to the Gautam Budh Nagar health department, teams from the community health centre at Dadha, Dankaur, conducted a medical camp in the sector on Thursday following complaints from residents. As part of the exercise, three survey teams carried out a door-to-door assessment covering 158 households to evaluate possible health impacts linked to the water supply.

Chief medical officer (CMO) Dr Narendra Kuma...