(3) Where, on the advice of the Agency, the Minister is satisfied that an additional gathering ground is required for the purposes of extending or augmenting the water supply, the Minister shall cause the limits or areas thereof to be marked out and the Minister shall, subject to subsection (5), by order published in the Gazette and at least 2 newspapers in general weekly circulation in Saint Lucia, specify the boundaries of the area and declare the area to be a gathering ground.