When it appears from (a) the statement required by Section 2709, (b) the articles of incorporation of any water corporation, or (c) any notice of appropriation of water required by law, that a water corporation has undertaken to supply more consumers or a greater number of acres than it can adequately supply, the commission may require the corporation to limit the number of consumers or acres of land which it has undertaken to supply or which is set out in its articles of incorporation or notices of appropriation to such a limited number of consumers or acres of land as the commission finds, after hearing,

that the water corporation may adequately supply.