Does Soft Water Leave Pink Residue?

However, you may also see signs of pink staining in your kitchen sink or pet water dish. Counter intuitively however, the pink staining is not in fact the result of poor water quality. The pink residue is usually an indication of a non-harmful bacteria. The most common form of this pink bacteria is serratia marcescens.

Why does my water cause pink stains?

The film is usually found as a ring that accumulates at the water line in the toilet bowl or on shower doors, sink drains, and bathtubs. The bacteria that causes these pink stains is Serratia Marcescens, which is found naturally in the environment. The airborne bacteria thrive on moisture, dust, and phosphates.

Why is there pink residue in my shower?

The “pink mold” you may find in your shower actually isn't mold, but a very common strain of airborne bacteria that's found throughout the world. The bacteria, Serratia marcescens, cause that pink or even red slime you might find in your shower, toilet bowl, or around other water fixtures.