I Think There is Laundry Detergent in this Water

My first thought of Ko Rah Waterfall was, is this safe to swim in? We'll I did, and I'm still here to write about it. But doesn't that water look like Laundry detergent or something. Some pools were more blue than others. I choose a more shallow less blue pool to cool off in. But I certainly haven't seen water this blue and non-transparent before in my life. Kinda had me thinking there was a laundry detergent factory up-stream or something. But after see plenty of healthy fish swimming all over, I figured this is just nature doing what it does. Now come and have a look for yourself!