u/Hopeful-Fox268

I know this question has been answered a thousand times but I have a very particular request. I’d like to find clean water sources to paddle board (mostly float) that I can feel safe getting into the water. I see the flint and the Tennessee river recommended a lot but are those clean enough to swim in? Are there certain parts a flint that are more clean? Well anyway let me know if you have any suggestions!
PS I’d love go to Smith Lake but I can’t seem to find a place that’s safe to take a paddle board with the rough boat traffic.