Not enough is being done about this horrendous health issue!
The Environmental Protection Agency has addressed the particulate pollution in their federal legislation known as the Clean Air Act. Individual states are responsible for implementing guidelines based on a timetable established by the Federal Government.
To protect public health and welfare, EPA issues National Ambient Air Quality Standards (NAAQS) for six criteria pollutants, particulate matter is one of these. EPA first issued standards for particulate matter in 1971; and revised the standards in 1987, 1997 and 2006. The revised 2006 standards address these two categories of particle pollution: fine particles (PM2.5), which are 2.5 micrometers in diameter and smaller; and inhalable coarse particles (PM10) which are smaller than 10 micrometers and larger than 2.5 micrometers.