It shall be the duty of the director of health to ascertain and cause all nuisances declared to be such by ordinance to be abated, and he or she shall have authority, either by himself or herself, or by his or her agents or deputies, to enter any house, stable, store or any building, at any time, in order to make a thorough examination of cellars, vaults, sinks or drains; to enter upon all lots and grounds and cause all stagnant waters to be drained off and pools, sinks, vaults, drains, holes or low grounds to be cleansed, filled up or otherwise purified, and to cause all noisome substances to be abated or removed. (Prior code § 18-26-4)