Nestle said on Wednesday it would sell Pure Life and some other struggling North American water brands to two private equity firms for $4.3 billion, as the food giant doubles down on its premium offerings including Perrier.

The sale, to One Rock Capital Partners and Metropoulos & Co, includes brands such as Poland Spring, Deer Park, Ozarka, Ice Mountain, Zephyrhills, Arrowhead and Splash, as well as U.S. office beverage delivery service ReadyRefresh.

Perrier, S.Pellegrino and Acqua Panna, which contributed to the growth recovery of Nestle's North American water business in the third quarter, are not part of the sale agreement, the company said.

"This sale enables us to create a more focused business around our international premium brands, local natural mineral waters and high-quality healthy hydration products," Chief Executive Officer Mark Schneider said in a statement.