EPA touts reduced air pollution, but impact of wildfires felt nationally
All six types of harmful air pollutants tracked by the Environmental Protection Agency have declined since the agency was founded in 1970, but some year-to-year gains were reduced by last year’s wildfires out West.
Under the Clean Air Act, the EPA tracks levels of lead, carbon monoxide, ozone and smog. The agency said levels of pollutants like lead and smog are decreasing over the long term but that there are year-to-year changes that still need to be addressed.
