Bit random but does anyone have a Brita Filter?!

[BabyDustPlease]

If you do, do you know if you don't replace the cartridge when it says a new one and carry on using it if thats dangerous?

Can't get a new cartridge till tomorrow.

It's not dangerous, but it's not ideal.
Initially the cartridge will continue to filter the water as normal.
But after continued use, its ability to filter the water become impaired.
Eventually, I was assured by an expert in such matters, it starts to return the impurities it has previously filtered back into the water you pour through.