In summary you should report:
• your supplied (mains) water used in cubic metres per annum.
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• direct abstraction of water as the volume taken per annum (not the
licensed volume).
• water returned to source in cubic metres per annum against the volume
of water supplied, and the volume of water abstracted. Report on
reused/recycled water quality and temperature. Discharge consent
data can be used.
• details if you collect/harvest and use rain water.
• a narrative of any investment into technologies that aim to improve your
water efficiency
• the above metrics against a base year/targets
• any strategies developed to minimise or manage the impact your water
use has on the environment.
If you are using any of the tools in annex I you should detail which. The
information generated from the tool should be sufficient for the needs and
interest of your stakeholders and investors.