Hello.
This was straight from Dr. Falkinham:
"There is no need to test your home plumbing for the presence of nontuberculous mycobacteria (NTM), because our studies and those of others, for example EPA, show that mostly every home in the United States in Canada has NTM."

So, I am now scrambling, new bronchiectasis diagnosis, to figure out best ways to "make safer" my home water without making myself - or my family - crazy. Turning up storage heater and filtering water will be first steps.