Dripping overflow on Block of flats

Is it normal for a block of flats to have just one overflow ?
Affinity water have been called out because the overflow is dripping and by the mess of the wall it’s been leaking for some time.
Water company have said it’s my flat that’s leaking due to my excessively high water usage.
I live alone and in Oct I was usually 477 litres a day which is very high considering I’m out all day. However since Oct I’m now usually approximately 1200 litres a day which is crazy.
Hence water company saying the leak is mine.
I’m struggling to understand how it’s possible to use this much water and why there is only one overflow for a block flats.
Any advise /help would be greatly appreciated.

Asked by Tracy on 19th May 2021
Expert Trade Answers
"Hi, I take it your flat is a number of years old this is probably why they've only used one overflow for a common connection I suggest possibly putting in additional pipework and yes if the overflow is coming from your flats it could be anything from an expansion valve via a toilet cistern oven a tank overflow in a loft or roof space"
Answered on 19th May 2021 - Member since Jan 2020 - report
"Hello, no you shouldn't be liable for that as it's in all the flats if anything who owns the building should pay it as you should have your own overflow"
Answered on 19th May 2021 - Member since May 2021 - report
"Hi. Usually, the overflow would be on a toilet or a boiler. I would imagine each dewlling would have them on each item. You may have a leak on your water supply."
Answered on 19th May 2021 - Member since May 2021 - report
"Have you checked what is overflowing? Your toilet, fortic tank? You could turn off your mains cold water to see if it stops? It's very basic."
Answered on 19th May 2021 - Member since Jun 2020 - report
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