Flipper ~
I found the following connection between Charles Elmer Hires and "Purock Water." But there were no dates associated with it. However, it reads like it took place while Hires was still alive, which was ... Born 1851 - Died 1937
Charles E. Hires
Rose Hill
Charles E. Hires is best known as the originator of Hires Root Beer, a soft drink which gained great popularity in the 1870s. Hires began his career as a pharmacist and sold a variety of health remedies and flavoring extracts before introducing root beer as a healthful and refreshing alternative to beer.
He also sold ginger ale which was called champanale. While soft drinks were at the heart of his enterprise, he was a pioneer in manufacturing condensed milk and had factories in towns near dairy centers including Malvern, Pennsylvania. His Purock Water Company distributed spring water around the region and Hires water coolers were found in many Philadelphia area buildings. Hires’ sugar plantations in Cuba supplied his bottling plants around the country.