You should only fill a Brita water pitcher full enough to store the unfiltered and filtered water without leaking.
How Full Can You Fill A Brita Water Pitcher?
Yes, you can overfill a Brita pitcher. Adding too much tap water at once to the top reservoir in the pitcher will cause water to spill into the handle and leak out of the jug.
Overflow Of Water From Top Reservoir One of the most likely outcomes of filling a Brita filter pitcher too full is overflowing from the top reservoir.
The simplest way to prevent overfilling a Brita water pitcher is to only fill to the MAX FILL line.
There’s no set timeline on when you should refill a Brita water pitcher, since this depends on your family size and the rate at which you use drinking water. We recommend refilling a Brita water pitcher as and when it makes sense to.