Air quality in Colchester We are responsible for monitoring and managing air quality in Colchester. Report an artificial light problem We have the power to deal with an artificial light problem which is persistent and unreasonable. Be part of the change for clean air in Colchester Motorists are being reminded that small changes to their driving habits can make a significant difference to the city’s air quality. Burning wood and coal in your home Household burning, such as open fires and stoves, is now the biggest source of particulate matter pollution and causes poor indoor air quality that can affect our health. Environmental permits Find information about industrial pollution and the permits we issue.