No such jointly contracting municipalities shall discharge any such trunk or outlet sewer, or sewers, or drains in tidewater adjacent to or within the boundaries of any municipality, until after a thorough and exhaustive examination of the locality of such discharge shall have been made by the state department of health, and a certificate from such department shall have been given to the governing body of such municipality certifying that in the judgment of such department, such discharge will not in any manner prejudice or impair the health or comfort of any of the inhabitants of this state.