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As stated in my origional question, we have our own well water and this will be used to establish these trees. Do we have any rights to protect our water supply, or do we have to wait until the water (or lack of it) is affecting us adversely?
It is potentially extremely serious! if they use all our well water to keep these trees alive . It is a 'slow feed' well, so therefore takes time to replenish the water taken out, especially this time of year. Surely there is some legal redress if they, in serving their own purposes, take all our shared water?