EPA Proposes to Retain National Air Quality Standards for Carbon Monoxide
(WASHINGTON, January 31, 2011) – After a careful review of the best available science, the U.S. Environmental Protection Agency (EPA) is proposing to keep the current national air quality standards for carbon monoxide (CO), while taking steps to gather additional data through more focused monitoring. The science shows that the current standards will protect people, especially those susceptible to health problems associated with breathing CO from the outdoor air. CO can cause harmful health effects by reducing oxygen delivery to the body's organs (like the heart and brain) and tissues. At extremely high levels, CO can cause death.