The maximum contaminant level $($MCL$)$ set by the EPA of antimony in drinking water is $0\mathrm{.}0060$ mg$/$L$.$

Convert the MCL of antimony from milligrams per liter to parts per billion $($ppb$).$

A farmer recently dug a new well for this property. He sends a $16\mathrm{.}0$ mL sample of the well water to the EPA to be tested for the presence of antimony. What is the maximum amount of Sb $($in micrograms$)$ that can be present in this $16\mathrm{.}0$mL sample based on its MCL$?$

Suppose the farmer rethinks his plan and digs a new will on the other side of his property. He sends in a new $16\mathrm{.}0$ mL sample. After testing, the EPA determines that the sample of water contains $0\mathrm{.}00189$ micrograms per milliliter of Sb$.$ Is the antimony level of the new well water safe to consume?