There is an author by this name who often writes in the Romance or Young Adult genres.

"Agua" is a common title for Spanish-language works. A notable recent "Agua" related book is Agua: A Novel by Begoña Oro, or various scientific papers on water management.

If you have the .epub file on your device, here are the best ways to get a summary:

You might be thinking of Alex Rosa (a popular indie romance author) or Alex Romero . How to Find the Content