Many would remember how the National Green Tribunal had in 2014 ordered several eateries in Hauz Khas village to remain shut until they installed effluent treatment facilities. These eateries were allegedly discharging untreated waste water and spent oil into the sewers. But that’s not the only trouble with a large number of unregulated eateries in the city.

Anshuman and his team at the water resources division of The Energy and Resources Institute (Teri) found that most restaurants used this scarce resource extremely inefficiently.
“Nearly 35-40% of water is wasted as leakage loss. By putting in place simple efficiency interventions, they can save 50-60% of water being currently being utilised,” says Anshuman whose team has proposed a “five-star rating system” for eateries, with one star as the lowest and five the highest.