Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
water supply
Introduction References & Edit History
Images & Videos
Rows of young lettuce plants in a field being watered by a long overhead irrigation sprinkler system. World map displaying projected water stress levels by country for the year 2040, using color shading from light yellow for low stress to dark brown for extremely high stress. The map highlights that countries in the Middle East, North Africa, and parts of South and Central Asia are expected to experience the highest levels of water stress, while much of North America, Europe, and parts of Asia and Africa are projected to have lower stress. A legend in the lower left explains the color categories
Searching for sustainable water supplies in Namibia
Explore the water supply and sanitary facilities of ancient Ostia, Italy
At a Glance
Lake Mead is seen in the distance behind a dead creosote bush in an area of dry, cracked earth that used to be underwater near where the Lake Mead Marina was once located on June 12, 2021 in the Lake Mead National Recreation Area, Nevada.
Comprehension Quiz: Water Scarcity
Quizzes
water glass on white background. (drink; clear; clean water; liquid)
Water and its Varying Forms

water supply: References & Edit History

Article Contributors

Primary Contributors

  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Contributors

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Add new Web site: Open Oregon Educational Resources - Environmental Biology - Water Cycle and Fresh Water Supply. Feb 06, 2026
Article revised and updated. Jan 22, 2010
Photo of irrigation sprinklers added. Jan 22, 2010
Article added to new online database. Jul 20, 1998
View Changes:
Article History
Revised:
By: