Hyderabad Metropolitan Water and Sewerage Board has fixed the tariff for availing the Dial-A-Septic Tank cleaner vehicles.
People who need to avail the septic tank cleaning facility can call the call centre (155313/14420).
The family members of the deceased alleged that the men, who had gone to the banquet hall for catering-related work, were forced to clean the septic tank and not given any protective gear.
With regards to the funds spent on the scheme, the RTI reply revealed that no fund was utilised in 2019-2020 while only Rs 7 lakh was used in 2020-2021.
The deceased were identified as Murugan (42) and Bagyaraj (40) of Katrambakkam, and Arumugam (50) of Amarambedu, all of them daily wage labourers.
Police said that the government office was built recently but without basic amenities, including ramps and toilets. As a result, employees were forced to use the toilets in the houses nearby.