If ozone levels exceed government safety standards, special health statements are issued for affected areas. If the unhealthful conditions are forecast to return the next day, an ozone advisory is issued. The U.S. Environmental Protection Agency has proposed that this level be lowered to 0.08 ppm. The federal Occupational Safety and Health Administration has set a permissible exposure limit of 0.1 ppm of ozone in workplace air. The Illinois Department of Public Health recommends that this level not be exceeded in the home.
Several companies make electronic instruments to measure ozone in air.
This pamphlet was supported in part by funds from the Comprehensive Environmental Response, Compensation, and Liability Act trust fund through a cooperative agreement with the Agency for Toxic Substances and Disease Registry, Public Health Service, U.S. Department of Health and Human Services.