Firefighter response times have risen in nine Wandsworth wards yet chiefs are still looking to halve the number of pumps in the area.
Wandsworth fire station could face a permanent reduction to one engine, despite an upward trend in response times since 2012.
The station lost its second fire engine, in August 2013, and the London Fire Commissioner, Ron Dobson, supports making this permanent.
January 12: London Fire Brigade to consult on permanent removal of one Wandsworth fire engine
December 21: Wandsworth has second highest rate of alcohol related fires, says London Fire Brigade
November 30: London Fire Brigade braces for £8.1m cuts by 2017
The move is against the wishes of the Fire Brigade Union and many firefighters at the West Hill station and comes as the brigade looks to cut £11.5m by 2017.
A consultation is under way on the future of the 13 fire engines, taken from 13 stations two-and-a-half years ago.
There are two proposals: one to take the engines permanently out of service, the other to restore the 13 engines but introduce alternate crewing in some stations with second appliances.
As part of alternate crewing, stations that have a fire engine and a special appliance would have one crew for both.
Figures from the London Fire and Emergency Planning Authority (LFEPA) show fire response times in 12 Wandsworth wards affected by the loss of the second engine have gone up since 2013.
In 2012/13, the average response time in 12 wards was five minutes and 31 seconds.
This went up to five minutes 57 seconds, three seconds off the overall target time of six minutes, for the first engine to reach a fire.
In the same time, the average response time for the second engine to reach the scene jumped to eight minutes six seconds, more than the target of eight minutes.
In 2012/13, the second engine would arrive in six minutes 53 seconds.
The figures cover Wandsworth Common, Earlsfield and East and West Putney, but also stretch to Merton Village as well as Mortlake and Barnes Common in Richmond.
Between 2012 and 2014, the number of fire injuries shot up from one to eight.
Injuries across all 12 wards rose from 11 in 2012/13 to 16 each year since.
In Wandsworth Common, the number of fires doubled from 17 to 35 the year after the second engine was taken away.
The London Fire Brigade only recognise the number of fires and attendance times across boroughs, not by ward.
Greg Edwards, of London Fire Union, said: "Our existence as an emergency service is to get there as quickly as possible.
"We know that by this getting cut, we cannot do that."
Mr Edwards urged people to respond to the consultation, but said he did not want either option fulfilled.
No fire stations would close under either consultation proposal and there would be no need for compulsory redundancies.
Speaking at a consultation meeting in Southfields, Mr Dobson said: "These have been absent for two-and-a-half years and number of fires we attend continues to go down.
"The number of fire deaths continues to go down.
"One of the things people were worried about years ago was were we going to be able to do proactive meetings like educating the public and we have carried out more than in any other year.
"We know the impact of these changes."
After the consultation, LFEPA will put a recommendation to the Mayor of London who will make the final decision.
The LFEPA consultation runs until 5pm on Monday, February 1.
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