This looks awesome dude. I wouldn’t be too worried about the water treatment stuff. They keep the most toxic water in a closed off area. The water you’re seeing certainly has bacteria and algae in it but it’s not a hazard otherwise you wouldn’t have been able to get close to it. It is unnerving though!
We got some disc golfing in this weekend as well and my son wants to go a bunch more before it gets cold. I need to expand my territory’s bit and look a bit more north!