Power of Director to direct local authority to improve water-supply

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