A local authority who propose to construct under the provisions of this Act a reservoir, other than a service reservoir or tank which will not contain more than one hundred thousand gallons, shall—
If, within twenty-eight days after the publication of the notice referred to in the preceding subsection, notice of objection to their proposals is served on the local authority by any owner or occupier of land affected by the proposals, or by such other local authority, if any, as aforesaid, they shall not proceed with their proposals unless all such objections so made are withdrawn, or the Minister, after a local inquiry, has approved the proposals, either with or without modification.