The civic authorities in Mumbai have issued fresh notices to real estate companies, directing them to install air quality monitoring sensors at every construction site within the next 30 days. This move comes as part of efforts to control rising dust levels across the city.
According to data shared by officials, Mumbai has nearly 1,200 active construction sites, but only about 45 percent of developers have installed the required sensors so far. At present, close to 550 developers have already set up the monitors, while around 200 more are in the process of procuring and installing them.
Officials stated that the instruction to install these devices was originally based on a High Court order issued in 2023. The court had asked the civic body to ensure that dust control rules were being followed at all project sites in Mumbai. Earlier in June, authorities made it compulsory for private builders to put up sensors that offer real time information on dust levels at their sites. The Mumbai Air Pollution Mitigation Plan had identified construction dust as one of the major contributors to the city’s declining air quality.
These compact devices track particulate matter in the air and show the Air Quality Index of a specific location. They are designed for hyperlocal monitoring, unlike larger systems that measure air quality for wider zones. Officials added that they will review the sensor data to check whether rules related to dust control, such as covering debris and sprinkling water, are being followed.
Project sites will also have LED boards displaying the AQI levels recorded by the sensors. This data will be linked to the civic system. Authorities said strict action will be taken against developers if a site repeatedly shows poor AQI readings.
Along with the pollution control board, teams of on ground staff will be deployed in all 24 municipal wards to track possible violations linked to dust displacement. The 30 day deadline ends in November. Companies that fail to install the monitors in this period will face penalties.
After the monsoon retreat, Mumbai’s overall air quality dropped from the good or satisfactory range to the moderate category. The day after Diwali, the city’s AQI fell to the poor category, with several areas reporting very poor air quality.
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