And bottled water is a huge seller for Costco. In the book, "The Joy of Costco," David and Susan Schwartz reported that, in 2022, Costco took in $730 million in bottled water sales, following only ...

The two products look very similar, so those who are wary of fluoride should double-check that the water bottles at their Costco are labeled as "purified water." Read more: Water Actually Isn't ...

A Costco customer claims she discovered the pH isn’t as advertised in the retailer’s bottled alkaline water. In a video with over 11,000 views, TikToker @vianht05 holds up a bottle of Kirkland ...