Question raised in Lok Sabha on Noise Pollution, 05/01/2018. Ambient noise levels are monitored on real time basis by Central Pollution Control Board (CPCB) in association with State Pollution Control Boards (SPCBs) / Pollution Control Committees (PCCs) in seven metro cities, namely Bengaluru, Chennai, Delhi, Hyderabad, Kolkata and Mumbai under National Ambient Noise Monitoring Programme (NANMP). The average level of noise pollution in respect of seven metro cities of the country including National Capital Territory of Delhi during last three years is annexed.