There are areas of texas that still remain flooded, and scientests are concerned. Floodwaters act as sponges for hazards. Underneith the floods lie dangerous things such as sharp objects, cars, and even wildlife. They also gather human waste and chemicals from industrial plants. Hurricane Harvey soaked up billions of bacteria that could pose a threat to Texans affected by the storm. The waters were tested and showed levels of bacteria hundreds of times above normal.The water even contained the fecal microbe E. coli. This sample was taken from the living room of someones home and the levels of E. coli that were 135 times what's considered safe. they have also found elevated levels of arsenic and lead.

http://www.businessinsider.com/hurricane-harvey-floodwater-dangerous-tet...