@windwalker888
When I ordered the shower clear shower head I also emailed the company that I had questions and left my number. That was one of my questions about mac still being in the water supply. The owner and inventer personally called me to answer my questions. He stated that it's in the shower head where most all of the biofilms are formed. There could be a small amount in the water still but its not colonizing like it is in the shower head. Almost all shower heads never dry out so they sit and get mac and mold growing in them. I have had mold in my sputum several times along with pseudomonas and Mac. I'm unable to use the tub because of bad knee so this shower head gives me some peace of mind. I will take short not steamy showers and hope for the best.
He sent me studies on the showerhead. My thoughts were my shower head was time to replace and why not do it with a solid brass flip open one that I don't need to worry about. Wasn't it in one of the links that you posted that in the studies they looked for the mac in homes of people with MAC infection that it was always found in the bathroom mostly the showerhead?
Shari