see, i've found a study suggesting that surfacewater in this region is over .150 mg/L. the government has a limit of .1 mg/L in additives, for processing.
so, i could potentially be at .250 mg/L in the water, here.
the number in all of the studies as the cut-off risk is .1 mg/L - which is what the government sets as the cut-off for additives.
this city is a retirement destination, too.