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Re: plmr49er post# 16786

Wednesday, 12/31/2008 3:22:37 PM

Wednesday, December 31, 2008 3:22:37 PM

Post# of 41961
Seems you really don't know what your talking about. Cleanest it's been in 100 years???? Hmm , some more misleading information from you. A trend???


Great Lakes water is not as pure as it once was. Far from it, in fact. During the 1960's and 70's the Great Lakes were so polluted that the ecosystem came dangerously close to collapse.


Water quality in the Great Lakes is of the utmost importance, as nearly 43 million people in the United States and Canada depend on it for drinking water. Millions of species of plants and animals live in or depend on the water for life as well.

For decades, Great Lakes water quality has been threatened by toxic pollutants such as mercury, PCBs, and agricultural pesticides like DDT. These chemicals enter the aquatic system through direct dumping, such as paper mill waste, or indirect pathways, such as field-water run-off and power plant air pollution, and can remain in the system for years. Threats to aquatic life become threats to human health when contaminated fish end up on our tables. Mercury contaminated fish in particular are of great concern - potentially causing birth defects, high blood pressure, infertility and even brain damage.

Sanitary sewer overflows, agricultural run-off (manure) dirty diapers, and failing septic systems can contribute to higher levels of bacteria in the water. This often requires beaches and other recreational locations to temporarily close to prevent swimmers from becoming ill. The increased organic matter (and phosphorus from agricultural fertilizers) in the waters also contributes to algae growth, oxygen depletion in the water, and threatens all of the Lakes' aquatic life. Lake Erie, historically one of the most polluted of the Great Lakes, currently suffers an enormous "dead zone," where life in the lake has nearly been extinguished.

The medicines humans consume can also affect the Great Lakes water quality. This happens if our bodies do not use the entire unit of medicine we take. The residual, of course, goes down the toilet or drain and into our water system. Unsafe levels of pharmaceuticals in the water supply can threaten the animals and humans that drink the water. More information is available at CNN .

Fortunately, policies such as the Great Lakes Water Quality Agreement , passed in 1972 and still in effect, and the Clean Water Act of 1977 have improved the condition of the Lakes.

We can all take steps now to help improve the health of the Lakes and prevent future public health emergencies. Click here to learn what you can do.



http://www.greatlakesforever.org/html/trouble/quality.html