In Bengaluru, officials from BBMP reported that the sewage flow into the Koramangala stormwater drain has decreased significantly from 120 million litres per day to around 8 MLD after the implementation of the K-100 Urban Waterway Project. Despite this claim, local residents and businesses along the drain insist that the foul smell and presence of sewage in the water have not improved. The K-100 project, funded with Rs 175 crore by the government, aims to revamp the 9.2-km stretch of the stormwater drain from KR Market to Bellandur Lake. The BBMP engineering department expects the project to be finished by the end of 2024.

Efforts to prevent sewage from entering the Koramangala Rajakaluve include the establishment of a 5 MLD capacity sewage treatment plant in Kumbaragundi near Kalasipalya and the installation of concrete rings and sewage-absorbing plants along the drain. Additionally, BWSSB is constructing a sewage treatment plant near Shantinagar, which is set to be completed by year-end. These initiatives are intended to completely block sewage inflow into the rajakaluve.

BBMP officials report that various infrastructural improvements have been completed, such as the construction of retaining walls, ground-level bridges, decorative lighting, landscaping, granite fixing, pedestrian walkways, and safety grills. Service roads and pipelines have also been built alongside the rajakaluve to prevent rainwater from the roads from flowing into the drain. The project was initiated by BBMP in 2021 with the aim of...Initially planned to be finished by 2023, it faced delays and missed multiple deadlines.