Articles by Shreya Nath

On September 4th, Bengaluru experienced one of its wettest days on record, causing large parts of the city to get severely flooded. This was after weeks of heavy rainfall that turned roads into rivers in some of the city’s rapidly developing ‘high-tech’ areas. This is going to happen again and again unless we fundamentally change how we approach urban planning. We need to proactively work with the assumption that such severe extreme weather events are the new normal and what can be done to prevent flooding in the city under these circumstances. As a sustainable architect and environmental modeller, I…

Do you live in an apartment with its own sewage treatment plant (STP)? Do you know how much of the treated water is reused and how much ends up clogging the city's stormwater drains? Despite laws in place in Bengaluru that mandate the setting up of decentralised plants and 'zero discharge', i.e. for all the treated water to be used up within the apartment fence, turns out reuse levels remain alarmingly low. The city now has over 3,000 decentralised STPs, which treat 615 million litres of sewage every day. Centralised STPs generate another 650 MLD of treated water. But the…

Bengaluru now has over 2,450 decentralised Sewage Treatment Plants (STPs), including those installed in apartments and large commercial buildings. These STPs cumulatively treat approximately 615 Million Litres of wastewater per day, which is 8% of the total sewage generated in the city. Most of these decentralised STPs are poorly maintained, resulting in poor quality of treated wastewater. There is limited reuse and the excess water is often illegally discharged into open drains, resulting in polluted lakes and water bodies. Reusing treated wastewater for gardening, toilet flushing and washing common areas in apartment complexes can reduce both water scarcity and water…