Grey/white spots on the bottom of a Brita filter, possibly mold? : r/whatisthisthing

Does this look like mold in my tea kettle or just burns? ( NOT asking for ID just is it mold or not ) : r/Mold

REPLACE YOUR FILTERS : r/HydroHomies

What is this black stuff? Found on brand new Brita water container. Already tried scrubbing it. : r/Whatisthis

Does this look like mold in my tea kettle or just burns? ( NOT asking for ID just is it mold or not ) : r/Mold

Mold/mildew in brita pitcher, please help : r/CleaningTips

Is this mold or just hard water buildup in my Brita filter? : r/Mold

Brita Water Pitcher Filter OB01/OB03 w Handle & new replacement cartridge 48oz

Why does my brand new Brita water pitcher have white sediment at the bottom floating around in the water? : r/NoStupidQuestions

Black stuff in Brita pitcher? : r/CleaningTips

What is this grey deposit? Its been showing up on any white plastic in the apartment, concerned it's some sort of chemical / gas residue : r/ whatisthisthing

what kind of mold is this? we found it in our water filter :( : r /MoldlyInteresting