378 Million pounds of pollutants flowed into Lake Michigan in 2005-06

Pounds of pollutants discharged into Lake Michigan and tributaries during 2005-2006

2,4-Dimethylphenol 0.791
Acenaphthene 0.038
Acenaphthylene 0.042
Aldrin 0.001
Ammonia 471,623
Anthracene 0.018
Arsenic 493
Benzene 51.31
Benzo(a)pyrene 11.83
BOD, carbonaceous 3,173,501
Cadmium 548
Carbon, total org. 466,675
Chemical oxygen demand 1,755,074
Chloride 54,825,485
Chlorine 86,224
Chromium, hex 1,918
Chromium, total 475
Chromium, total rec 2,005
Coliform, fecal
Copper 5,573
Cyanide, free 172
Cyanide, total 8,295
Cyanide, weak 88.322
DDT 0.001
Dibenzofuran 0.791
Flourene 0.02
Flouride 405,745
Iron 73,840
Lead 6.995
Magnesium 4,398,293
Manganese 1,867
Mercury 32.9
Napthalene 1.39
Nickel 2,047
Nitrogen, nitrate 1,500,946
Nitrogen, nitrite 14,467
Oil and grease 5,495,460
Oxygen demand, chem. 1,755,047
PCBs 0.275
Phenanthrene 0.01
Phenolics 13,476
Phosphorus 143,140
Selenium 18.88
Silver 92.7
Solids, dissolved 227,734,078
Solids, suspended 18,303,779
Sulfate (SO4) 59,671,523
Sulfide (S) 326.7
Tetrachloroethylene 14.86
Thallium 0.13 N/A
Zinc 30,287

Total pounds of pollutants discharged into Lake Michigan and tributaries during 2005-2006: 378,594,633


(Source: Indiana Post Tribune, U.S. Environmental Protection Agency, Indiana Department of Environmental Management, International Joint Commission, Indiana State Department of Health)