The appellate order of the Government shall be final.

Power of Director of Health Services to direct local authority to improve water-supply If the [Director of Health Services] is satisfied upon investigation that any source of public water-supply in a local area is contaminated or is subject to imminent risk or contamination by reason of unsatisfactory location, protections construction, operation or maintenance, an speedy remedy or immediate prevention is, in his opinion, desirable, he may, by order, direct the local authority to take such measures as may be specified therein; and local authority shall take action accordingly.