I have answered some questions as "Don't Know" simply because more information on the effects of those proposals is required.
ie :
Is sharing water a two way option.
Will the water reservoir impact wildlife etc when constructed or during construction.
Water restrictions via a standpipe should always be avoided if at all possible, the impact on elderly and disabled has not been clearly defined.
Installing water meters for all regardless of whether they would be billed according to use is probably an unnecessary expense that would be born by all users. Better to fit meters as properties change ownership and use legislation to enable the change.