Around how often do you need to change the filter in Brita water filters?

Just on average, how long does a filter last?Around how often do you need to change the filter in Brita water filters?We drink a lot of water and change ours about every 4 months.Around how often do you need to change the filter in Brita water filters?Brita says every 90 daysAround how often do you need to change the filter in Brita water filters?I believe the box reads 90 days.