Severn Trent has urged customers to be careful about what is washed down the sink on ‘Stir-up Sunday’.

The water company has asked customers to be cautious about what is washed down the sink as families prepare their Christmas puddings.

'Stir-up Sunday' falls on November 24, the last Sunday before Advent, and is a tradition where families mix ingredients for their Christmas puddings.

The company warned that ingredients, cake batter, fats, oils, and greases could cause blockages and fatbergs in sewers.

This could lead to flooding in homes, which could be avoided if waste is properly disposed of in bins.

Severn Trent, which supplies water through Hafren Dyfrdwy, encouraged people not to block the sewers.

Winter helper Grant Mitchell said: "We know this time of year sees families getting together and creating hearty, home-cooked meals or getting prepared for the festive season.

"We all love the festive treats, I know I do, but that could also mean extra fats, oils and greases are being disposed of in incorrect ways.

"By working together, we can reduce blockages that have a massive, and sometimes costly, impact on customers.

"That is why we are asking everyone to 'be a binner, not a blocker', scrape all leftover fats, oils, greases, ingredients or anything else that shouldn’t go down the sink into the bin."

As part of their initiative, Severn Trent is asking customers to work together to prepare their homes for the colder months and keep the sewers free from blockages.

In the bathroom, customers are advised to only flush the '3 Ps' - pee, poo, and toilet paper - and to have a bin for all unflushable items, such as sanitary towels, tampons, nappies, and wipes.

In the kitchen, customers are encouraged to use kitchen roll to soak up grease from plates and pans before washing up.

Used cooking oil, fat, and grease should be collected in a container, jar, or tin, and placed in the bin once cool.