My water has “detectable” levels of mercury. However to detect it a sample needs to go to a lab for a series of tests to detect an amount that is so low as to be negligible.
Every atom of mercury ingested kills 1 cell.
Every day an amalgam filling releases (I forget the exact number, it’s like > 10^10 Hg atoms) per day.
FDA says mercury fillings may harm “some.” We’re probably not that some, right?
A lot of people are concerned about that. And your “detectable” result may be more than that.