The UK missed a 2010 deadline to meet EU air quality rules but the new plan put forward by the government after losing at the supreme court would not cut pollution to legal levels until 2025 in some cities, including London.
“The government’s current air quality plan with respect to London is based on the very limited ambition of the previous mayor to tackle air pollution and isn’t enough to protect Londoners health,” said Khan. “I know from personal experience that the city’s air is damaging people’s health as I suffer from adult-onset asthma myself.”
The legal documents filed said: “The mayor is concerned that compliance is achieved in as short a period as is possible in order to protect the health of those living and working in London, particularly those in disadvantaged communities which are likely to be affected disproportionately by poor air quality.”
Earlier in May, the Guardian revealed an air quality report that remained unpublished while Boris Johnson was mayor which showed 433 schools in the capital are in areas that exceed legal limits for nitrogen dioxide pollution and that four-fifths of those are in deprived areas.
Air pollution was called a “public health emergency” by the environment committee of MPs in April, and causes 40,000-50,000 early deaths every year across the country. A report from two Royal Colleges of medicine in February estimated the cost of the damage at £20bn a year.
Khan’s first major policy announcement after winning the mayoral election for Labour were new plans to tackle the capital’s air pollution. These include more than doubling the size of the planned Ultra Low Emission Zone (ULEZ) - which the oldest and dirtiest cars must pay £12.50 to enter - and retrofitting 1,000 more buses with clean technology.
Alan Andrews, at ClientEarth, said he was delighted Khan was joining the case against the government. “It’s clear to everyone the government hasn’t got a leg to stand on,” he said. “Instead of wasting more time and money dragging this out in the courts, they need to come to the table with a serious plan showing how they are going to tackle deadly diesel pollution.”
Andrews said: “The mayor has a big role to play in delivering a bigger and better ULEZ for London, but we also need national measures that will benefit those living across the UK who are being made sick and dying early because of air pollution. This is a national public health crisis that demands a national solution.”
Khan said: “It’s clear we need to speed up our efforts so I’m calling on the government to match my new level of ambition for London and to work with me to improve our city’s dirty air and to make sure we get within legal limits much sooner - before the current target of 2025.”
A spokesman for the Department of Environment, Food and Rural Affairs said: “Our plans clearly set out how we will improve the UK’s air quality through a new programme of Clean Air Zones and continued investment in clean technologies will create cleaner, healthier air for all. We cannot comment on ongoing legal proceedings.”
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