The CIA World Factbook Every edition, 2021 to 2025 World
Major aquifers World, in 5 editions.
The entry for World published Major aquifers in 5 editions of 36, from 2021 to 2025. The text changed in 2 editions. Each is shown as published. Major aquifers in every entry.
- editions changed the text
- 2
- the first edition with it
- 2021
- the latest edition with it
- 2025
Published as “Major aquifers” (2021 to 2025).
field in that editiontext changed from the edition beforenot in that editionthe edition shownChoose an edition on the strip beside the text, or step through them with the arrows. Mark changes compares it with the edition before: the marks are ours, words added and words removed.
2025 edition
Rewritten since 2024The same text in 3 editions, 2021 to 2023.
Published as “Major aquifers”
- summary statement:
- aquifers are underground layers of water-bearing permeable rock formations;
- they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences);
- groundwater from aquifers can be extracted using a water well;
- The World Factbook lists 37 major aquifers across 52 countries;
- of these, 13 are in Africa, 10 in Asia, 5 in North America, 3 in South America, 4 in Europe, and 2 in Australia;
- although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater;
- the fresh water held in these aquifers represents more than 30% of the World's fresh water;
- in the US, groundwater is primarily used for irrigation and globally, 70% of groundwater withdrawn is used for agriculture;
- groundwater also supplies almost half of all drinking water worldwide
Published as “Major aquifers”
- summary statement:
- aquifers are underground layers of water-bearing permeable rock formations;
- they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences);
- groundwater from aquifers can be extracted using a water well;
- The World Factbook lists 37 major aquifers across 52 countries;
- of these, 13 are in Africa, 10 in Asia, 5 in North America, 3 in South America, 4 in Europe, and 2 in Australia;
- although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater;
- the fresh water held in these aquifers represents more than 30% of the World's fresh water;
- in the US, groundwater is primarily used for irrigation and globally, 70% of groundwater withdrawn is used for agriculture;
- groundwater also supplies almost half of all drinking water worldwide
summary statement: aquifers are underground layers of water-bearing permeable rock formations; they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences); groundwater from aquifers can be extracted using a water well; The World Factbook lists 37 major aquifers across 52 countries; of these, 13 are in Africa, 10 in Asia, 5 in North America, 3 in South America, 4 in Europe, and 2 in Australia; although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater; the fresh water held in these aquifers represents more than 30% of the World's fresh water; in the US, groundwater is primarily used for irrigation and globally, 70% of groundwater withdrawn is used for agriculture; groundwater also supplies almost half of all drinking water worldwide
summary statement: aquifers are underground layers of water-bearing permeable rock formations; they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences); groundwater from aquifers can be extracted using a water well; The World Factbook lists 37 major aquifers across 52 countries; of these, 13 are in Africa, 10 in Asia, 5 in North America, 3 in South America, 4 in Europe, and 2 in Australia; although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater; the fresh water held in these aquifers represents more than 30% of the World's fresh water; in the US, groundwater is primarily used for irrigation and globally, 70% of groundwater withdrawn is used for agriculture; groundwater also supplies almost half of all drinking water worldwide
Published as “Major aquifers”
- aquifers are underground layers of water-bearing permeable rock formations;
- they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences);
- groundwater from aquifers can be extracted using a water well
The World Factbook lists 37 major aquifers across 52 countries:
Africa - 13
Asia - 10
North America - 5
South America - 3
Europe - 4
Australia -2
- although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater;
- the fresh water held in these aquifers represents more than 30% of the world's fresh water;
- in the US, groundwater is primarily used for irrigation, and globally, 70% of groundwater withdrawn is used for agriculture;
- groundwater also supplies almost half of all drinking water worldwide
Published as “Major aquifers”
- aquifers are underground layers of water-bearing permeable rock formations;
- they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences);
- groundwater from aquifers can be extracted using a water well
The World Factbook lists 37 major aquifers across 52 countries:
Africa - 13
Asia - 10
North America - 5
South America - 3
Europe - 4
Australia -2
- although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater;
- the fresh water held in these aquifers represents more than 30% of the world's fresh water;
- in the US, groundwater is primarily used for irrigation, and globally, 70% of groundwater withdrawn is used for agriculture;
- groundwater also supplies almost half of all drinking water worldwide
summary statement: aquifers are underground layers of water-bearing permeable rock formations; they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences); groundwater from aquifers can be extracted using a water well; well
The World Factbook lists 37 major aquifers across 52 countries; of these, countries:
Africa - 13 are in Africa,
Asia - 10 in Asia, 5 in
North America, 3 in America - 5
South America, America - 3
Europe - 4 in Europe, and 2 in Australia;
Australia -2
although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater; the fresh water held in these aquifers represents more than 30% of the World's world's fresh water; in the US, groundwater is primarily used for irrigation irrigation, and globally, 70% of groundwater withdrawn is used for agriculture; groundwater also supplies almost half of all drinking water worldwidesummary statement: aquifers are underground layers of water-bearing permeable rock formations; they include alluvial formations such as unconsolidated sand and gravel aquifers, sedimentary rock formations of sandstone and karst (carbonate rocks such as limestone) aquifers, as well as volcanic aquifers, and basement aquifers (igneous and metamorphic rocks that underlie sedimentary and volcanic rock sequences); groundwater from aquifers can be extracted using a water well; well
The World Factbook lists 37 major aquifers across 52 countries; of these, countries:
Africa - 13 are in Africa,
Asia - 10 in Asia, 5 in
North America, 3 in America - 5
South America, America - 3
Europe - 4 in Europe, and 2 in Australia;
Australia -2
although aquifers can vary in size, the major aquifers listed in The Factbook contain the bulk of the stored volume of groundwater; the fresh water held in these aquifers represents more than 30% of the World's world's fresh water; in the US, groundwater is primarily used for irrigation irrigation, and globally, 70% of groundwater withdrawn is used for agriculture; groundwater also supplies almost half of all drinking water worldwide
aquifers are underground layers of water-bearing permeable rock formations; groundwater from aquifers can be extracted using a water well
The World Factbook lists 37 major aquifers across 52 countries:
Africa - 13
Asia - 10
North America - 5
South America - 3
Europe - 4
Australia -2
- these aquifers contain the bulk of the stored volume of groundwater;
- this represents more than 30% of the world's fresh water;
- in the US, groundwater is primarily used for irrigation;
- globally, 70% of the groundwater withdrawn is used for agriculture;
- groundwater also supplies almost half of all drinking water worldwide
Rewritten: too little of the 2024 text remains to mark the changes.
aquifers are underground layers of water-bearing permeable rock formations; groundwater from aquifers can be extracted using a water well
The World Factbook lists 37 major aquifers across 52 countries:
Africa - 13
Asia - 10
North America - 5
South America - 3
Europe - 4
Australia -2
these aquifers contain the bulk of the stored volume of groundwater; this represents more than 30% of the world's fresh water; in the US, groundwater is primarily used for irrigation; globally, 70% of the groundwater withdrawn is used for agriculture; groundwater also supplies almost half of all drinking water worldwide
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Cite this page
Central Intelligence Agency. “World: Major aquifers.” The World Factbook, 2021–2025 editions. Archived by The Factbook, thefactbook.org/world/major-aquifers.