Failure of incumbent government

Once Dhaka was known to all across the world for its glorious achievement so much so that Dhaka University was called the Oxford in the East and Narayangonj the Dandi, Muslin City and like that.But now the Hazaribag area of Dhaka is one of the most polluted places in the world which ranked 5th according to a news item published in the news media – national and international – recently.
Is it one of the failure of the Awami League government?
A Concerned citizen
Tarash
Sirajganj