Sahun ruwa

Sawun ruwa yana nuna girman amfani da ruwa dangane da amfani da mutaneWater footprints of nations: Water use by people as a function of their consumption pattern" (PDF). Water Footprint Network. Archived from the original (PDF) on 17 April 2018. Retrieved 3 March 2018 An bayyana sawun ruwa na mutum, al'umma, ko kasuwanci a matsayin jimlar yawan ruwan da ake amfani da shi don samar da kayayyaki da ayyukan da mutum ko al'umma ke cinyewa ko kuma kasuwancin ke samarwa. Ana auna amfani da ruwa a cikin ƙarar ruwan da aka cinye (wanda aka ƙafe) da/ko gurɓatacce kowace raka'a na lokaci. Za a iya ƙididdige sawun ruwa ga kowane ƙayyadaddun gungun masu amfani (misali, mutum, iyali, ƙauye, birni, lardin, jiha, ko ƙasa) ko masu samarwa (misali, ƙungiyar jama'a, kamfanoni masu zaman kansu, ko ɓangaren tattalin arziki), don tsari ɗaya (kamar noman shinkafa) ko don kowane samfur ko sabis.Waterfootprint.org: Water footprint and virtual water". The Water Footprint Network. Retrieved 30 October 2023.

A al'adance, ana tuntuɓar amfani da ruwa daga ɓangaren samar da ruwa, ta hanyar ƙididdige ginshiƙai uku masu zuwa na amfani da ruwa: janyewar ruwa a fannin noma, masana'antu, da cikin gida. Duk da yake wannan yana samar da bayanai masu mahimmanci, hanya ce mai iyaka ta kallon yadda ake amfani da ruwa a cikin duniya ta duniya, wanda ba a koyaushe ana amfani da kayayyaki a ƙasarsu ta asali. Ciniki na kasa da kasa na kayayyakin noma da masana'antu a sakamakon haka yana haifar da kwararar ruwa na duniya, ko ruwa mai hade (daidai da manufar samar da makamashi).Water footprints of nations: Water use by people as a function of their consumption pattern" (PDF). Water Footprint Network. Archived from the original (PDF) on 17 April 2018. Retrieved 3 March 2018.

A cikin 2002, an gabatar da manufar sawun ruwa don samun alamar amfani da ruwa mai tushen amfani, wanda zai iya samar da bayanai masu amfani ban da alamun samar da ruwa na gargajiya na tushen amfanin ruwa. Yana kama da manufar sawun muhalli da aka gabatar a cikin 1990s. Sawun ruwa alama ce ta fayyace ƙasa, ba wai kawai yana nuna adadin amfani da ruwa da ƙazanta ba, har ma da wuraren.Definition taken from the Hoekstra, A.Y. and Chapagain, A.K. (2008) Globalization of water: Sharing the planet's freshwater resources, Blackwell Publishing, Oxford, UK.

 Ma,ana da Aunawa 
Akwai bangarori daban-daban na sawun ruwa don haka ma'anoni daban-daban da matakan siffanta su. Sawun ruwan shuɗi yana nufin amfani da ruwan ƙasa ko ƙasa, koren sawun ruwa yana nufin ruwan sama, sawun ruwan toka yana nufin adadin ruwan da ake buƙata don lalata gurɓatacce"16030, 1841-01-13, PERROT (fabrique)". Art Sales Catalogues Online. doi:10.1163/2210-7886_asc-16030. Retrieved 2021-10-25..

Sawun ruwan shuɗi

Sawun ruwan shuɗi yana nufin yawan ruwan da aka samo daga ƙasa ko albarkatun ƙasa (tafkuna, koguna, dausayi da magudanan ruwa) kuma ko dai ya ƙafe (misali yayin da ake ban ruwa), ko kuma an haɗa shi cikin wani samfur ko kuma an ɗauke shi daga wani ruwa a koma wani, ko kuma ya dawo a wani lokaci daban. Noman ban ruwa, masana'antu da amfani da ruwa na cikin gida kowanne na iya samun sawun ruwan shudi."What is a water footprint?". The Water Footprint Network. Retrieved 8 March 2018.

Sawun koren ruwa yana nufin adadin ruwa daga hazo wanda, bayan an adana shi a cikin tushen ƙasa (ruwa mai koren), ko dai ya ɓace ta hanyar evapotranspiration ko haɗa shi da tsire-tsire. Yana da dacewa musamman ga kayan noma, kayan lambu da na gandun daji."The Water Footprint Assessment Manual". Water Footprint Network. Archived from the original on 2015-02-10. Retrieved 2015-01-20.

Sawun ruwan toka

Sawun ruwa mai launin toka yana nufin adadin ruwan da ake buƙata don narke gurɓatattun abubuwa (masu fitar da masana'antu, magudanar ruwa daga tafkunan wutsiya a ayyukan hakar ma'adinai, ruwan datti na birni da ba a kula da shi ba, ko gurɓataccen tushe kamar zubar da ruwa na noma ko kwararowar birni) har ingancin ruwan ya dace da ƙa'idodin ingancin ruwa da aka amince da suThe Water Footprint Assessment Manual". Water Footprint Network. Archived from the original on 2015-02-10. Retrieved 2015-01-20.. Ana lissafinsa kamar:

L

c

max

-

c

nat

{\displaystyle {\frac {L}{c_{\text{max}}-c_{\text{nat}}}}

inda L shine nauyin gurɓatacce (kamar yawan jujjuyawar taro), cmax matsakaicin matsakaicin da aka yarda da shi kuma yana iya daidaita yanayin gurɓataccen gurɓataccen ruwa a cikin jikin ruwa mai karɓa (dukansu da aka bayyana a cikin taro/girma).The Water Footprint Assessment Manual". Water Footprint Network. Archived from the original on 2015-02-10. Retrieved 2015-01-20.

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