NOISE levels in the region have been mapped in an effort to tackle potential problems.
The Welsh Government has published a series of maps to illustrate levels of noise across the country.
The maps show estimated levels of noise from road traffic for the whole of Wales, but so far show industrial noise for only the biggest urban areas in South Wales.
The noisiest local areas are along the A483 trunk road which runs north to south through Wrexham, and the A55 east to west across the North Wales coast.
Among the widest areas affected by road noise are corridors between Brymbo and Rhos around Wrexham, and Ewloe to Pentre Halkyn on the A55.
The aim is to help local authorities and other bodies to identify where high levels of noise coincide with other social and environmental problems.
Environment minister John Griffiths said: “One of my top priorities is to improve the local environment for people living in our most disadvantaged areas.
“Noise pollution should be treated with particular seriousness when it coincides with other factors such as poor air quality, low housing standards and lack of green space.”
One of the maps looks at noise generated by trains. Almost all mapped railway lines are due to be electrified and the Welsh Government is looking at the improvements in noise levels likely to result from this.
It will shortly be consulting on a noise action plan which will bring together the policies and priorities of public authorities across Wales.
To view the noise maps online, visit http://data.wales.gov.uk/apps/noise.