Environment & Community Relations


Chhatrapati Shivaji International Airport (CSIA) was taken over from Airport Authority of India (AAI) by Mumbai International Airport Pvt. Ltd. (MIAL) a GVK led consortium, in May 2006 and MoEF granted Environmental Clearance to MIAL in April 2007 for the expansion and modernization of CSIA. The major project components include modernization, development and expansion of passenger terminals, runways, aprons & parking bays, construction of taxiways, vehicle parking and other utility services including state-of-the-art sewage treatment plants.

Compliance with all the conditions given in the various environmental approvals is monitored through legal registers, consent conditions, compliance registers and a compliance management system at CSIA. For each approval, records are maintained regularly under an Environmental Management System (ISO 14001:2004). These documents and records are reviewed once in six months for strict adherence to the conditions.

At CSIA, Environment Management & Compliance is always on high priority. matter. Various environmental parameters are being measured and reported by CSIA in addition to the continuous monitoring system.

MIAL has also hired the services of MoEF authorized laboratory to carry out periodic environmental sampling of ambient air quality, ambient noise levels, wastewater quality, storm water, DG set emissions, etc. Environmental monitoring is carried out every month as per the monitoring schedule to check whether results are within the prescribed standards given in the approvals / consents.

Waste Water Management

Waste water generated at Chhatrapati Shivaji International Airport is treated at state of the art Sewage Treatment Plants (STPs) based on SBR technology followed by UF & RO. These plants are located at different locations at CSIA. Three STPs are installed to treat the sewage generated from the terminal buildings & airside facilities.

The Major Components of STP are:

  • Sequential Batch Reactor (SBR technology)
  • Disinfection Unit
  • Pressure Sand Filter
  • Sludge Thickener
  • Ultra Filtration Unit
  • Reverse Osmosis Plant
The treated water is used for flushing and cooling in the terminal buildings.

Noise Management

A noise monitoring system is installed at CSIA as per the requirements given by DGCA and in line with international Aviation Noise Monitoring requirements. Two permanent noise monitoring terminals have been installed outside the airport premises along the landing and take-off funnel of the main runway. One Mobile Noise Monitoring terminal is installed inside the airport premises. The noise levels are captured continuously and it correlates with the aircraft movements. Various noise indices have been calculated such as:

  • LA max
  • LDEN
  • Lnight
  • LDE
  • Lmin
  • Leq 24 hrs
  • L day etc.

Based on the results, noise modeling and contouring to is done for effective analysis and further implementation of noise abatement measures at CSIA.


A Continuous Ambient Air Quality Monitoring System has also been installed at the airport. The parameters monitored are:

  • SOx
  • NOx
  • PM10
  • PM2.5
  • HC
  • CO
  • O3
  • CH4

The Continuous Ambient Air Quality Monitoring Station is installed at Airside near runway 09

Greenery / Horticulture Management

MIAL is always taking initiatives to improve the green area coverage in and around the airport. MIAL has been partnering with Sanjay Gandhi National Park (SGNP) for over 4 years and has continuously contributed towards environmental protection and sustainability of the bio diversity at the national park.

Few of the initiatives taken up by MIAL are:

  • Organizing an International flower show in collaboration with Mumbai Rose Society
  • Maintaining the gardens at Western Express Highway
  • Distributing plants to passengers
  • Medicinal and herbal plantation
  • Foliage and flowering trees at SGNP
  • Solar lamp for tribal families at SGNP
  • Ornamental tree distribution for forest division in Shahpur Area


Our climate change strategy provides a holistic framework for managing the carbon footprint. Our strategy consists of four progressive objectives being taken up in phases. These are:

  • Measure
  • Manage
  • Reduce
  • Communicate

MIAL has implemented a Green House Gas (GHG) management System since 2011 and is one of the first few airports in Asia Pacific to be accredited under Airport Carbon Accreditation (ACA) at Level-1 (Mapping). As a part of GHG management program, we have developed a Carbon Accounting and Management System (CAMS) to identify measure & manage GHG emissions. The accounting method followed is based on ISO 14061-1 using IPCC approved emission factors. The emission patterns are identified and specific development programs are implemented to mitigate emission.

MIAL has a web application, developed in-house, which maintains the inventory of the annual GHG emission in CO2 equivalent, and the respective sources.

The inventory report created by this application is audited, relevant opportunities are identified and projects are undertaken accordingly to reduce emission.

MIAL participates in the ACA program of Airport Council International (ACI) Asia-pacific. Our initiatives to reduce carbon emissions have resulted positively and upgraded the accreditation from Level-1 (Mapping) to Level-2 (Reduction) in 2013 and upgraded successfully to level 3 (Optimisation) in 2015.

Sustainability Reporting

MIAL’s business approach is one that creates long-term value for all the stakeholders by minimizing risks and harnessing opportunities through effective management of various business aspects pertaining to Economic, Social and Environment bottom-lines.

MIAL launched its first Sustainability Report in 2012 based on the Global Reporting Initiative (GRI) G3.1 guidelines,
followed by the Second Sustainability report in 2014. The Sustainability report released in 2014 follows the latest GRI G4 reporting guidelines and as per the new guideline, this report meets the highest application level for completeness, transparency and stakeholder inclusiveness termed as In-accordance ‘Comprehensive’.
The report is the 1st in Asia and the 5th worldwide in the aviation sector to be reported as per the G4 guidelines. The report is designed around the theme of the New Terminal 2, embodying its grand vision and purpose including our cultural heritage.

To download the latest Sustainability Report, click here.