Why is it not safe to wash contact lenses with water?

Ophthalmologist Dr Purendra Bhasin said that tap water and sink surfaces are not sterile and may contain bacteria, fungi and parasites like Acanthamoeba keratitis." He said that when a contact lens comes in contact with these, it can trap germs against your eye, increasing the risk of infection, irritation or inflammation. Even clean-looking water can carry harmful microbes, he added.