Noise Pollution in Mumbai Metropolitan Region (MMR):
An emerging Environmental Threat
MUMBAI METROPOLITAN
REGION (MMR)
Introduction
- Geographical Area : 6355 sq. km.
- Population (2011) : 26 million
- Municipal Corporations :
Mumbai, Navi-MumbaI, Thane, Panvel, Bhiwandi-Nizampur,
Kalyan-Dombivali, Mira-Bhayander, Vasai-Virar and Ulhasnagar
- 36 locations monitored
- LDN ranges from 65 - 100 dBA across commercial zones of MMR
- Noisiest Com. Zone : Ulhasnagar
- Least noisy Com. Zone: Bhiwandi-Nizampur
Results
- 35 locations monitored
- Noise levels over 24 hrs (LDN) ranges from 60-95 dBA across industrial zones of MMR
- Noisiest Ind. Zone : Bhiwandi-Nizampur
- Least noisy Ind. Zone : Navi-Mumbai
- 34 locations monitored
- LDN during Working days: Lowest at Navi Mumbai (71.6 dBA) & Highest at Mira-Bhayandar (84.7 dBA)
- LDN during Non-working days: Lowest at Ulhasnagar (67.9 dBA) & Highest at Mira-Bhayandar (84.8 dBA)
Results (contd.)
- 48 locations monitored
- LDN during Working days: Lowest at Ulhasnagar (74.9 dBA) & Highest at Mira – Bhayander (87.3 dBA)
- LDN during Non-Working days: Lowest at Panvel (74.9 dBA) & Highest at Ulhasnagar (87.3 dBA)
Analysis
Analysis
Noise Exceedance Factor
Noise Levels Across MMR
Overall Leq Across MMR
NEF more than threshold value of 1 depicts degree of violation of noise permissible limits
- Worst affected - Silence zone with highest NEF during day and night time
- Clear indication of unplanned, congested and unruly developmental and commercial activities