(a) Any structure, building or portion thereof used for human habitation shall be deemed to be in an unclean and unsanitary condition by reason of any portion of such building being infected with a communicable disease, by reason of the absence therein of toilet facilities as required by law or ordinance or by reason of the known presence of sewer gas therein or thereon.
(b) Any structure, building or portion thereof used for human habitation shall be deemed to be in an unclean and unsanitary condition when unfit for human habitation or in a condition dangerous or harmful to the lives or health of the occupants by reason of the inhabited portion of the house being damp or wet or by reason of such lack of repair, such accumulation of dirt, filth, litter, refuse or other offensive or dangerous substances or liquids, such defects in or lack of repair of or improper use of the drainage, plumbing or ventilation, or the existence on the premises of such a nuisance or other condition, as is likely to cause sickness among the occupants. Any structure, building or portion thereof used for human habitation which is in such an unclean or unsanitary condition is hereby declared to constitute a public nuisance. (1977 Code Sec. 94.06)