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The warning threshold, which distinguishes a non-stressed from a water scarce region, is around 20 %, with severe scarcity occurring where the WEI exceeds 40 %.
WEI (water exploitation index) divides the total water abstraction by the long-term annual average resource. However, this indicator does not fully reflect the level of stress upon local water resources: this is primarily because the WEI is based on annual data and cannot, therefore, account for seasonal variations in water availability and abstraction.
Is junk and marketing mail being delivered to your home?
Removing your name from the mailing list can be as easy as sending a letter, postcard, email or ticking a box on a form. This can save many trees and a lot of water each year. You can also add a sign on your mailbox: ‘No advertisements please’.
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