Lynn - Why would you want to even try? Just drink the Pellegrino separately if you enjoy drinking it... but it does have an acidic pH. The benefit and focus of the WW is to provide a consistent method of alkalizing.... plus the "unique" form of magnesium.
For the WW, you need to follow the instructions with seltzer as the carbonation to make the magnesium bicarbonate water (end product) with nothing else added.
You can check the content list for Pellegrino water on page 4 at this link [
www.nestle-watersna.com]
Jackie