Sunday, August 3, 2014

What caused the Water Pollution with Microcystis Toxins in Toledo?



With all the news reports on people running out of water in Toledo and flooding regional stores buying every gallon of bottled water on the shelves, there is no mentioning about what caused this alarming pollution of Toledo’s water supply. This information, however, is crucial to prevent worse from coming!
The toxin producing cyanobacterium Microcystis is NOT growing due to Detroit’s waste water – as a WTOL reporter misleadingly reported, but because of massive amounts of fertilizer, especially phosphates, entering through the rivers Raisin and Maumee.
The major source of this fertilizer is agriculture, especially large monocultures of corn, which requires large amount of fertilizers that are often applied in excess and at the wrong time of year. In addition, many farmers ignore the recommendations for buffer zones around drains and creeks and other recommended measures to minimize fertilizer runoff. (1, 2)
But we also have to consider another player behind this water crisis that is big business in Lenawee County and the surrounding areas in Michigan and Ohio. These are CAFOs (Concentrated Animal Feeding Operations) housing 1000s of dairy cows, swine, and poultry producing so much waste that the operators often have to get rid of it improperly as shown in the increasing number of violations confirmed by the Michigan DEQ (3).
The animal waste adds to the agricultural fertilizer runoff and over-fertilizes the “algae” (cyanobacteria) in Lake Erie that in return produce toxins poisoning our drinking water.
When will we wake up from our slumber of oblivion and realize that we are sawing off the very limb that we are sitting on?
Sources:
      (1)    Harmful Algal Bloom Monitoring System of The National Centers for Coastal Ocean Sciences: http://www2.nccos.noaa.gov/coast/lakeerie/bulletin/bulletin_current.pdf
      (2)    Michalak AM, Anderson EJ, Beletsky D, Boland S, Bosch NS, Bridgeman TB, Chaffin JD, Cho K, Confesor R, Daloğlu I et al. . 2013. Record-setting algal bloom in Lake Erie caused by agricultural and meteorological trends consistent with expected future conditions. Proceedings of the National Academy of Sciences. http://www.pnas.org/content/early/2013/03/28/1216006110.abstract
     (3)    Confirmed Violations/Discharges from CAFOs and Liquid-System Livestock Operations to Bean/Tiffin Watershed and River Raisin Watershed: http://nocafos.org/violations.htm

No comments:

Post a Comment