Subject: RE: Sprint Tri in Indy 8-23 Here is what I found on Blue Green Algae, I have never encountered large quanities that I know of, good luck tomorrow, I saw that the race is sold out.
Direct contact or breathing airborne droplets containing high levels of blue-green algal toxins during swimming or showering can cause irritation of the skin, eyes, nose and throat and inflammation in the respiratory tract.
Recreational contact, such as swimming, and household contact, such as bathing or showering, with water not visibly affected by a bluegreen algae bloom is not expected to cause health effects. However, some individuals could be especially sensitive to even low levels of algal toxins and might experience mild symptoms such as skin, eye or throat irritation or allergic reactions.
There is less information available about the potential health effects of long-term exposure to low levels of blue-green algal toxins. Some limited evidence from human studies suggests that long-term consumption of untreated surface waters containing high levels of bluegreen algal toxins could be associated with an increased risk of liver cancer. However, people in these studies also were exposed to other factors associated with liver cancer. As a result, it is unknown whether algal toxin exposure contributed to this risk.
Long-term, continuous exposure to algal toxins in the Northeast is unlikely, because blue-green algal blooms are likely to occur only during the hottest part of the summer. New York State public water supplies that use surface water sources also have operational controls to minimize the introduction of blue-green algae in drinking water.
Ron |