According to a just published article by Nature World News, the ancient Mayans, who lived in Mexico, Belize and Guatemala, dealt with water shortages due to lack of rainfall. How did they deal with it?
Surveying technology found hundreds of water reservoirs were found at a Mayan site in central Yucatan in Mexico; five of those reservoirs have been unearthed. According to the article, "It seems like they were arranged with clay plasters that allowed water to be locked in without seeping away." The material used goes back to 900. B.C.
To get some tips on how to conserve water in our time, check out our Water Conservation section on DrinkTap.org.