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

Black stuff in cat's water fountain…mold or from filter? : r/cats

Brita bottle owners: How to clean blackish stuff from inside rubber straw? Tried dish soap+sponge/q tip and nothing's worked : r/water

Drank from my Brita filter only to realize there was algae growing on the bottom. Will I be okay? : r/HydroHomies

Drank from my Brita filter only to realize there was algae growing on the bottom. Will I be okay? : r/HydroHomies

Black stuff in cat's water fountain…mold or from filter? : r/cats

Is this mold at the bottom of my Brita filter, or just charcoal from a new filter? : r/CleaningTips

Brita Filter - is it really better for the environment - Beach Street News

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

What are these white cottony balls found in my faucet's aerator? : r/ whatisthisthing

The aftermath of cleaning mildew/mold from my Brita pitcher :/ (I hope it's clean) : r/Cleaningandtidying

Is this a mold in my Brita filter? : r/HydroHomies