A hazard is a potential source of harm. Substances, events, or circumstances can constitute hazards when their nature would allow them, even just theoretically, to cause damage to health, life, property, or any other interest of value.
A non-hazardous contaminant is a substance present in the workplace environment that does not provide an intrinsic risk to human health or safety due to worker exposure. Non-hazardous contaminants are generally considered to be those that are neither corrosive, toxic, ignitable, or reactive with other substances.
