How much water do Brita maxtra cartridges filter before they need replacing?

Question

I can get a gallon of spring water from the supermarket for 90pence. Is it worth getting a water filter?

Answer 1

I used my filter for about two months before replacing it. It really depends on the amount of calcification in your water. If the magnesium is very visible on the surface of hot tea, you'll be using it about a month.

The other thing is the reduction of plastic waste from bottles.

In Northern England the water is very low in calcified deposits, so the water doesn't really need filtering, just allow the light chlorine aroma to disappear. In the places like the South East, the water is horribly calcified.

Answer 2

12 weeks when used twice daily.