Tom's of Maine has received a warning from the Food and Drug Administration about a "black mold-like substance," as well as bacteria in the water, at the Sanford factory where its toothpaste is made.

The FDA sent a warning letter flagging "significant violations" of manufacturing regulations for Tom's of Maine toothpaste.

An inspection this year of a Tom’s of Maine’s facility in Sanford, Maine, turned up several violations, including bacteria in water used to make toothpaste, bacterial growth in another type of toothpaste and “a black mold-like substance” near manufacturing equipment,

US Tom’s of Maine toothpaste was made with water containing multiple strains of dangerous bacteria and sold to consumers anyway, according to a warning letter p

Water used to make Tom’s Simply White Clean Mint Toothpaste contained bacteria that can cause blood and lung infections,

Tom's of Maine ignored 'approximately 400 complaints' related to the color, taste, and odor of its toothpaste, per the FDA.

Water contaminated with dangerous bacteria was used to manufacture batches of Tom’s of Maine toothpaste, a brand owned by Colgate-Palmolive, according to the U.S. Food and Drug Administration. The FDA said in a Nov.