Cooking oil and fats are combining with wet wipes, condoms and nappies in Brisbane's sewers.

Residents are responsible for creating the blockages known as "fatbergs" and they are forming faster during the city's colder weather.

A fatberg was uncovered in Vauxhall Street in Virginia in February, while other sizeable fatbergs have been found across the city including at Buckingham Street, Ashgrove, Montague Road, West End and Sir Fred Schonell Drive at St Lucia

Queensland Urban Utilities spends about $1.5 million clearing 4000 blockages a year.