London Mayor, Ken Livingstone, claims Heathrow's proposed third runway would produce 3M tonnes of CO2, making it impossible to achieve London's target of a 60% reduction in carbon emissions by 2025.
The Mayor's office issued the statement yesterday in response to the government's 'Adding capacity at Heathrow' consultation, outining objections to expansion plans for Heathrow Airport.
Livingston said: "I have examined the case for a third runway at Heathrow airport and found that it simply does not hold water. The massive expansion in Heathrow's capacity would have an adverse impact on efforts to tackle climate change; it would increase aircraft noise, worsen road congestion and further reduce air quality in one of the most polluted parts of London."
In his statement, the Mayor asserts there is no consideration given to how an estimated 48 million extra passengers will get to Heathrow without causing gridlock on the capital's roads.
He also claims that the government proposals on reducing noise pollution lack detail.
Commenting on the impact of Heathrow's expansion in the area neighbouring the airport, the Mayor said: "This would have dramatic negative consequences for the communities directly under the flight paths with more noise and pollution, affecting the health and quality of life for all of those affected."
"The expansion of Heathrow would also take much needed green space and mean the complete destruction of hundreds of homes and several established communities."
The document claims that at least 700 properties will have to be demolished to make way for the airport expansion, including a primary school, a community centre, and 100 listed buildings.
"We have a moral and civic duty to protect our environment not just for us, but for the generations who will come after us," he added.
Livingstone's comments accord with those issued by the London Assembly last month.