What is the pink deposit that is sometimes seen in toilets and around sinks and bathtubs?

How to Get Rid of Pink Slime Around the Drain - Pink Mold No More

We transformed our rundown pink loo with stained carpets to a monochrome dream but trolls say it's a 'copy & paste' job

What Causes Pink Bathroom Slime, and How Do I Remove It? - SpringWell Water Filtration Systems

NOTCHIS Pumice Stone for Toilet Cleaning Bowl Stick, Refresh Toilet within 1 Minute, 6 New Ways to Use a Pumice Stone, Remove Water Rings Stains on Toilets Bowls, Bathtubs, Pool Tiles

THE PINK STUFF Miracle 750 ml Bathroom Foam Cleaner 100547425 - The Home Depot

Articles by Joe Schwarcz Phd Office for Science and Society - McGill University

What Is the Pink Slime in My Bathroom? – SimpleLab Tap Score

Pink Mold in Shower?

What Causes Pink Stains On Toilets and Bathtubs?