There's an ongoing online conversation happening about the cleanest lake for swimming in Missouri and the conclusion depends on who and what you trust.
When you go swimming in Illinois, you need to understand the dangers in the water. Now, you need to consider the possibility that there are bears swimming in Illinois lakes as a new video share proves.
You need to be as safe before you get in the water as you hopefully are when you're swimming. There are now 25 water areas in Illinois that have been declared too unsafe for swimming due to dangerous bacteria levels.