It is unlawful for any person to cause, allow, or permit the disposal of wastewater, human excrement, or other liquid wastes, in any place or manner except through and by means of an approved plumbing and sewer system, installed and maintained in accordance with the provisions of this division and of the plumbing code of the city.
(Ord. 266 § 201, 1981)
It is unlawful to discharge to any natural outlet within the city, any domestic or industrial wastes, or other polluted waters, except where suitable treatment has been provided in accordance with the provisions of this division.
(Ord. 266 § 202, 1981)
Except as hereinafter provided, it is unlawful to construct or maintain any privy, privy vault, septic tank, cesspool, or other facility intended or used for the disposal of wastes. Except the owner or occupant of lands, buildings or premises having private waste disposal systems, hereafter annexed to the city, may continue the use of such system within the city, provided the same is not enlarged or expanded and is approved by the designated city health officer and the city plumbing official, but in no event shall such systems be used or be available for use for a period of more than six years from the date of annexation, unless the sewer collection system is not available for use. Any such private waste disposal system which has been in use or available for use for more than six years within the city is declared a public nuisance, and a violation of this chapter.
(Ord. 266 § 203, 1981)
No owner shall discharge or cause or allow to be discharged to a public sewer, wastewater which contains the following:
A. 
Explosive Mixtures. Liquids, solids, or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the wastewater treatment system or to the operation of the system. Prohibited materials include, but are not limited to: gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, and sulfides.
B. 
Noxious Material. Noxious or malodorous solids, liquids or gases which, either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life, or prevent entry into a public sewer for its maintenance and repair.
C. 
Improperly Shredded Garbage. Garbage that has not been ground or comminuted to such a degree that all particles will be carried freely in suspension under flow conditions normally prevailing in the public sewers, with no particle greater than one-half inch in any dimension.
D. 
Radioactive Wastes. Radioactive wastes or isotopes of such halflife or concentration that they do not comply with regulations or orders issued by the appropriate authority having control over their use and which will or may cause damage or hazards to the wastewater treatment system or personnel operating the system.
E. 
Solid or Viscous Wastes. Solid or viscous wastes which will or may cause obstruction to the flow in a public sewer, or otherwise interfere with the proper operation of the wastewater treatment system. Prohibited materials include, but are not limited to, uncomminuted garbage, animal guts or tissues, paunch manure, earth, bones, feathers, ashes, cinders, sand, spent lime, cement, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastic, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, and similar substances.
F. 
Excessive Discharge Rate. Wastewaters at a flow rate or containing such concentrations or quantities of pollutants that exceed for any time period longer than fifteen minutes more than five times the average twenty-four-hour concentration, quantities or flow during normal operation and that would cause a treatment process upset and subsequent loss of treatment efficiency.
G. 
Toxic Substances. Any toxic substances in amounts exceeding standards promulgated by the Administrator of the United States Environmental Protection Agency pursuant to Section 307(a) of the Act, or as established by the city, and chemical elements or compounds, phenols or other taste or odor-producing substances, or any other substances which are not susceptible to treatment or which may interfere with the treatment processes or efficiency of the treatment system, or that will be unsuitable for reclamation and reuse.
H. 
Unpolluted Waters. Any unpolluted water including, but not limited to, water from cooling systems or of storm-water origin, which will increase the hydraulic load on the wastewater treatment system. The city may approve the discharge of such water only when no reasonable alternative method of disposal is available.
I. 
Discolored Material. Wastes with objectionable color not removable by the wastewater treatment process.
J. 
Corrosive Wastes. Any waste which will cause corrosion or deterioration of the treatment system. All wastes discharged to the public sewer system must have a pH value in the range of six to ten standard units. Prohibited materials include, but are not limited to, acids, sulfides, concentrated chloride and fluoride compounds, and substances which will react with water to form acidic products.
K. 
Temperature. Any waste having a temperature higher than one hundred fifty degrees Fahrenheit (sixty-five and one-half degrees centigrade).
L. 
Oil and Grease. Any waste containing more than three hundred milligrams per liter of oil and grease of animal or vegetable origin or any waste containing more than one hundred milligrams per liter of oil and grease of mineral or petroleum origin.
M. 
Limitations on Point of Discharge. No owner shall discharge any substances directly into a manhole or other opening in a public sewer other than through an approved building sewer, unless the owner has been issued a permit by the city for a direct discharge.
N. 
Holding Tank Wastes. An owner proposing to discharge holding tank waste into a public sewer must secure a holding tank waste discharge permit. Unless allowed by the city under the terms and conditions of the permit, a separate permit must be secured for each separate discharge. This permit will state the specific location of discharge, the time of day the discharge is to occur, the volume of the discharge, and the wastewater constituents and characteristics. If a permit is granted for discharge of such waste into a public sewer, the owner shall pay the applicable user charges and fees and shall meet such other conditions as required by the city.
(Ord. 266 § 204, 1981)
No owner shall discharge into a public sewer wastewater containing in excess of one thousand milligrams per liter biochemical oxygen demand or one thousand milligrams per liter total suspended matter (based on twenty-four-hour composite sample). Dilution of any wastewater discharge for the purpose of satisfying these requirements shall be considered a violation of this division.
(Ord. 266 § 205, 1981)