The Council at all times shall control the distribution of space, in, over, under, or across all streets or public grounds occupied by public utility fixtures. All rights granted for the construction and operation of public utilities shall be subject to the continuing right of the Council to require such reconstruction, relocation, change, or discontinuance of the appliances used by the utility in the streets, alleys, avenues and highways of the City, as in the opinion of the Council shall be necessary in the public interest.