This Link does not exist in your language, View in: English (en),
Or use Google Translate:  
Papia Portugues (mcm) | Change Language (Change Language)

https://www.globalwaters.org/

The Water and Development Technical Series is a set of technical briefs that provide guidance on important topics for developing and implementing water and sanitation activities in support of the U.S. Government Global Water Strategy and USAID’s plan under the strategy.