The city shall have the power to classify the industrial wastes from any lot, parcel of land, building or premises discharged therefrom into the sewerage system of the city, taking into consideration the quantity of sewage produced and its concentration, strength of pollution qualities in general and of any other factors entering into the cost of its disposal, for the purpose of fixing and prescribing a distinct rate of rental or use charge. Should it be found that, as to the sewer uses, the water basis consumption does not provide a practicable method in the premises, but until so determined and the distinct rate fixed, the water consumption basis hereinbefore prescribed shall remain in full force and effect as to the commercial or industrial users. The city may require and prescribe pretreatment on the consumer’s premises.
(Prior Code, § 3.20)