Yes, landlords or property managers must have a working knowledge of hazardous substances and wastes and the laws regulating property owners.  A hazardous waste is a byproduct of a manufactured item, while a hazardous substance may include everyday items, such as household cleaning products and paint. 

The hazardous substances a property owner will most typically come in contact with are asbestos, radon, contents of underground storage tanks, urea formaldehyde, polychlorinated byphenyls (PCBs) and lead paint. 

Before renting a property, the landlord is responsible for removing or repairing any issues related to environmental or safety hazards.