Ohio Tops List of Most Toxic States
The chimneys of a coal-fired power plant.
Credit: © Danicek | Dreamstime.com

Ohio, Pennsylvania and Florida are the states with the most toxic air pollution from coal and oil power plants, according to a new report by an environmental advocacy group.

The Natural Resources Defense Council (NRDC) used Environmental Protection Agency data to rank the top 20 worst states for air pollution from power plants.

According to the report, half of all air pollution from industrial sources in the United States comes from coal- and oil-fired power plants.

According to the NRDC, here are the 20 most toxic states, from worst to best:

  1. Ohio
  2. Pennsylvania
  3.  Florida
  4. Kentucky
  5. Maryland
  6. Indiana
  7. Michigan
  8. West Virginia
  9. Georgia
  10. North Carolina
  11. South Carolina
  12. Alabama
  13. Texas
  14. Virginia
  15. Tennessee
  16. Missouri
  17. Illinois
  18. Wisconsin
  19. New Hampshire
  20. Iowa

Overall, U.S. power plants emitted 771 million pounds of toxic chemicals in 2009, with the electric sector responsible for 49 percent of all industrial toxic air pollution that year, or 382 million pounds. [Top 10 Alternative Energy Bets]

Accounting for 12 percent of U.S. industrial air pollution, Ohio's power plants emitted 44.5 million pounds of harmful chemicals in 2009. For comparison, the 20th ranked state, Iowa, was responsible for just 1 percent of U.S. industrial air pollution, or 2.5 million pounds of harmful chemicals.

The researchers also looked specifically at mercury air pollution, finding Ohio and Pennsylvania also took the top two spots in this measure.

The EPA is attempting to revise its public health protections to make its Mercury and Air Toxics standard stricter, but lawmakers including House Energy and Commerce Committee chair Fred Upton (R-MI) have vowed to block the new measures. According to the EPA, the proposed standards would prevent up to 120,000 cases of childhood asthma each year and save 17,000 lives per year by 2015.

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