The smoke produced by burning leaves releases carbon monoxide into the air, which is particularly threatening to seniors, people with cardiovascular problems and infants, including unborn children. Additionally, the particulate matter disperses other toxic gases including known cancer-causing substances into the air.
Leaves do not burn cleanly as they may be wet and may be mixed with wood and other materials. This causes incomplete combustion which creates high levels of toxic chemicals known as hydrocarbons. These chemicals can irritate the lungs, causing respiratory infection or distress, including asthma attacks. People in the immediate area can suffer headaches as well as eye, nose and throat irritation.
In a dry climate or if proper safety precautions are not taken, an uncontrolled burn can quickly spread and destroy homes and property. Homeowners may not have the resources or presence of mind to control piles of burning leaves if the fire begins to spread. Some communities allow leaf burning by permit, but homeowners must follow strict guidelines which may include specific days and times for open burning and certain weather conditions. Also, the burn must be located a set distance from any home or structure.
If the open burning of leaves damages homes and property, extensive cleanup and reconstruction costs may be involved. Insurance companies, firefighting personnel and other official resources may need to be utilized.
Some municipalities offer homeowners the option to have their leaves picked up if properly bagged and placed in areas designated by community agencies. If that service is unavailable, fallen leaves can be used as compost to enrich soil and provide nutrients for other vegetation. Some communities have programs where those who need to get rid of leaves can pass them on to other homeowners who want them to use as compost. The U.S. Environmental Protection Agency offers several informational publications on composting and waste management at no cost to the public. Call their RCRA (Resource Conservation and Recovery Act) Hotline at (800) 424-9346.