[R.O. 2013 §24-62; Ord. No. 16.6 (Bill No. 457) Art. V §1, 3-15-1979]
No person shall discharge or cause to be discharged any storm water, surface water, ground water, roof runoff, subsurface drainage, including interior and exterior foundation drains, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer.
[R.O. 2013 §24-63; Ord. No. 16.6 (Bill No. 457) Art. V §2, 3-15-1979]
Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as combined sewers or storm sewers, or to a natural outlet approved by the director. Industrial cooling water or unpolluted process waters may be discharged on approval of the director to a storm sewer, combined sewer or natural outlet.
[R.O. 2013 §24-64; Ord. No. 16.6 (Bill No. 457) Art. V. §§3 — 4, 3-15-1979]
A. 
No person shall discharge or cause to be discharged any of the following described waters or wastes to any sewer:
1. 
Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas.
2. 
Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant, including, but not limited to, cyanides in excess of two (2) mg/l as CN in the wastes as discharged to the sewer.
3. 
Any waters or wastes having a pH lower than five and one-half (5.5), or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works.
4. 
Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or otherwise interfere with the proper operation of the sewage works, such as, but not limited to ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails, and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
5. 
Any waters or wastes having a five (5) day BOD greater than three hundred (300) parts per million by weight, or containing more than three hundred fifty (350) parts per million by weight of suspended solids, or having an average daily flow greater than two percent (2%) of the average sewage flow of the City shall be subject to the review of the director. Where necessary, in the opinion of the director, the owner shall provide, at his/her expense, such preliminary treatment as may be necessary to reduce the BOD to three hundred (300) parts per million by weight, or reduce the suspended solids to three hundred fifty (350) parts per million by weight, or control the quantities and rates of discharge of such waters or wastes. Plans, specifications and any other pertinent information relating to proposed preliminary treatment facilities shall be submitted for the approval of the director; and no construction of such facilities shall be commenced until said approvals are obtained in writing.
B. 
No person shall discharge or cause to be discharged the following described substances, materials, waters or wastes if it appears likely in the opinion of the director that such wastes can harm either the sewers, sewage treatment process or equipment; have an adverse effect on the receiving stream; can otherwise endanger life, limb, public property; or constitute a nuisance. In forming his/her opinion as to the acceptability of these wastes, the director will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and other pertinent factors. The substances prohibited are:
1. 
Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (150° F.) (sixty-five degrees Celsius (65° C.)).
2. 
Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become viscous at temperatures between thirty-two degrees Fahrenheit (32° F.) and one hundred fifty degrees Fahrenheit (150° F.) (zero (0°) and sixty-five degrees Celsius (65° C.)).
3. 
Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths (3/4) horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the director.
4. 
Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions whether neutralized or not.
5. 
Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances; or wastes exerting an excessive chlorine requirement to such degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the director for such materials.
6. 
Any waters or wastes containing phenols or other taste- or odor-producing substances in such concentrations exceeding limits which may be established by the director as necessary, after treatment of the composite sewage, to meet the requirements of State, Federal or other public agencies of jurisdiction for such discharge to the receiving waters.
7. 
Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the director in compliance with applicable State or Federal regulations.
8. 
Any waters or wastes having a pH in excess of ten (10.0).
9. 
Materials which exert or cause:
a. 
Unusual concentrations of inert suspended solids (such as, but not limited to, Fuller's earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride or sodium sulfate).
b. 
Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions).
c. 
Unusual BOD, chemical oxygen demand or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works.
d. 
Unusual volume of flow or concentration of wastes constituting "slugs" as defined herein.
10. 
Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.