Does granite harbor bacteria?
Granite continues to be used and approved in food and medical applications. The CDC (Centers for Disease Control and Prevention) has no reports of granite harboring bacteria, and has no reports of people becoming ill from bacteria in granite or harbored on its surface. With regular cleaning, granite is far less likely to support bacteria than butcher block or even laminated materials with top-mounted sinks. Granite countertops should be cleaned using simple warm water and mild soap.