Water Defra


This methodology allows the user to calculate life-cycle emissions from water. The methodology follows that from the latest Defra data and advice which in turn is sourced from Water UK. Full life-cycle emissions are calculated including contributions from carbon dioxide, nitrous oxide and methane.

How to use this category

To use this category first use the drill-down type to select the life-cycle emissions to be calculated from the following options.

  • supply
  • treatment
  • supply and treatment
The quantity of water is then entered as a profile item value. The default units for this value are m³. The algorithm then multiplies this quantity by the relevant emission factor to give a result of kgCO2e, which includes CO2, N2O and CH4 emissions.

VC41IU73IIIQ supply and treatment
5V7D85RC1I3P treatment
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Name: Water_Defra
Full path: /home/water/defra
Parent Category: Water
Provenance: DEFRA - Water UK