For the purpose of this Title Three - Public Utilities, certain terms are defined as follows:
(a) “Sanitary sewage” means the waste from water closets, urinals, lavatories, sinks, bathtubs, showers, household laundries, cellar floor drains, bars, soda fountains, cuspidors, refrigerator drips, drinking fountains and other water-borne waste not constituting an industrial waste.
(b) "Acceptable industrial wastes" means liquid waste materials not containing toxic or explosive elements or other substances injurious to sewers or sewage treatment processes.
(c) "Nonacceptable industrial wastes" means liquids in which are incorporated minerals, oil, acid, toxic, metallic, inflammable or chemical substances, any one of which contains toxic, inflammable or explosive elements injurious to sewers or sewage treatment processes.
(1957 Code §16-1)