And that statement applies directly to the quarry, not just to various bodies of water in the area? And you are sure they don't mean the cement creek pond? I wonder if it is possible to take a sample of the water to someone to test for toxins? I know that sometime in the near future the area is slated for development including a water sports recreation area. I can't find the website now, but when I find it I'll post it; it shows the artist's depiction of what they are going to turn the old quarry into. It definitely includes plans for letting people in the water.
From what I've been able to dig up it was a concrete quarry owned by a company called Lafarge, I saw nothing about any "Carswell" in there.
Anyhow, more research is needed before I'll let this one go! Thanks for looking into it though. I'll certainly need more verification before I get wet. I wonder also, if the lake is so toxic, why are there so many animals in it? I'd certainly like to know for sure.