Lancashire families have been advised that their Christmas turkey could come back to haunt them this year.
Households in the county will pour around a quarter of a million pints of turkey fat down their drains over the festive season - leading to blocked pipes and big bills.
United Utilities (UU) said 25 per cent more fat – about 500 tonnes – goes down drains in December, with engineers having to deal with an increase in sewer blockages, many caused by grease, fat, or oil solidifying in pipes.
The firm spends around £13m annually to unblock items from public sewers.
UU spokesman Tony Griffiths said: “Fat and grease cause more than half the sewer blockages we deal with every year.
“When the fat cools, it hardens, clogging pipes and causing wastewater to spill out into streets, streams, rivers and even homes and gardens.
“Household pipes can get blocked too, resulting in hefty bills.
“We’re advising all our customers to pour their fat and oil into a container, and once cooled, scrape it out into the bin.”