Este Link não existe na sua língua, Ver em: English (en),
Ou usar o Google Translate:  

https://www.hipporoller.org/about/

The “Hippo Water Roller Project” was established in 1994 in response to the unique needs and constraints in terms of access to water of rural women and children across Africa.

 

Now simply referred to as “Hippo Roller”, the broad social impact of this social enterprise has been felt in more than 20 countries, with a total distribution of 50,000 Hippo Water Rollers, and a reach of close to half a million people.