[R.O. 2008 §710.370; Code 1968 §28-33; CC 1988 §29-126]
No person shall discharge or cause to be discharged any stormwater, surface water, ground water, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters into any sanitary sewer. Any connection, drain or arrangement which will permit any such waters to enter any sanitary sewer shall be deemed to be a violation of this Section and this Title.
[R.O. 2008 §710.380; Code 1968 §28-34; CC 1988 §29-127]
It shall be unlawful for any person constructing a sewer or house or building connection or an industrial connection to a sanitary sewer to leave such connection open, unsealed or incomplete in such a manner that will permit storm or surface water to enter into any sanitary sewer within the City. All such openings shall be tightly sealed at all points whenever work is not in progress on such sewer or connection.
[R.O. 2008 §710.390; Code 1968 §28-35; CC 1988 §29-128; Ord. No. 20-2024, 10-14-2024]
Stormwater and all other unpolluted drainage shall be discharged into such sewers as are specifically designated as storm sewers or to a drainage channel or natural outlet approved by the Enterprise Director. Industrial cooling water or unpolluted process water may be discharged, on approval of the Enterprise Director, to a storm sewer, drainage channel or natural outlet.
[R.O. 2008 §710.400; Code 1968 §28-36; CC 1988 §29-129; Ord. No. 20-2024, 10-14-2024]
No person shall deposit or throw into any sewer, sewer inlet, or private drain connecting to a public sewer any ashes, cinders, sand, mud, straw, hay, shavings, tinners scraps, waste, produce or material of manufacture, rags or garbage which have not been properly shredded, or any substance which may cause an obstruction or cause a nuisance. No dam or other obstruction shall be placed in any sewer unless permission to do so is expressly granted by the Enterprise Director.
[R.O. 2008 §710.410; Code 1968 §28-38; CC 1988 §29-130]
A. 
No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
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) milligrams per liter as CN in the wastes discharged to the public sewer.
3. 
Any waters or waste having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structure, equipment, and personnel of the sewerage works.
4. 
Solids or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference 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, lime slurry, lime residues, chemical residues, paint residues and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
[R.O. 2008 §710.420; Code 1968 §28-38; CC 1988 §29-131; Ord. No. 20-2024, 10-14-2024]
A. 
No person shall discharge or cause to be discharged to the public sewers the following described substances, materials, waters, or wastes, if in the opinion of the Enterprise Director such wastes can harm the sewer, sewage treatment process or equipment, have adverse effect on the receiving stream or can otherwise endanger life, limb, public property or constitute a nuisance. In forming his/her opinion as to the acceptability of these wastes, the Enterprise 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 and other pertinent factors. Prohibited substances are:
1. 
Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (150°F).
2. 
Any water or waste containing fats, wax, grease or oils, whether emulsified or not in excess of one hundred (100) milligrams per liter or containing substances which may solidify or become discernibly viscous at temperatures between thirty-two and one hundred fifty degrees Fahrenheit (32°F and 150°F).
3. 
Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths (¾) horsepower or greater shall be subject to the review and approval of the Enterprise Director.
4. 
Any waters or wastes containing acid iron pickling wastes or concentrated plating solutions whether neutralized or not.
5. 
Any noxious or malodorous substance which can form a gas, which either singly or by interaction with other wastes is capable of causing objectionable odors; or hazard to life or form solids in concentrations exceeding limits established herein; or creates any other condition deleterious to structures, treatment processes or equipment; or requires unusual provisions, attention or expense to handle such materials.
6. 
Any water or wastes containing phenols in excess of 0.5 parts per million or other taste- or odor-producing substances in such concentrations exceeding such limits as may be set by the Enterprise Director as necessary, after treatment of composite sewage, to meet the requirements of the State, Federal or other public agencies or jurisdiction for such discharge to receiving waters.
7. 
Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Enterprise Director in compliance with applicable State and Federal regulations.
8. 
Any waters or wastes having a pH in excess of 10.5.
9. 
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 the State, Federal or other agencies having jurisdiction over discharge to receiving waters.
[R.O. 2008 §710.430; Code 1968 §28-39; CC 1988 §29-132; Ord. No. 20-2024, 10-14-2024]
A. 
Except in quantities or concentrations, or with provisions as stipulated herein, it shall be unlawful for any person to discharge or cause to be discharged waters or wastes to the public sewers containing:
1. 
Free or emulsified oil and grease exceeding, on analysis, an average of one hundred (100) parts per million (eight hundred thirty-three (833) pounds per million gallons) of either or both or combinations thereof, if in the opinion of the Enterprise Director it appears probable that such wastes can deposit grease or oil in the sewer lines in such a manner as to produce clogging or can have deleterious effects on the treatment process due to the excessive quantities.
2. 
Salts of heavy metals in solution or suspension in concentrations exceeding the following:
Chromium (Hexavalent)
5 parts per million
Chromium (Trivalent)
10 parts per million
Copper as Cu
3 parts per million
Iron
15 parts per million
Zinc as Zn 3
3 parts per million
Nickel as Ni
3 parts per million
Cadmium as Cd
3 parts per million
Lead
0.1 parts per million
or similar objectionable or toxic substances or wastes exerting excessive chlorine requirement to such a degree that any such material received in the composite sewage at the sewage treatment works exceeds the limits established by the Enterprise Director for such materials.
3. 
Cyanides or cyanogen compounds capable of liberating hydrocyanic gas on acidification in excess of two (2) parts per million by weight as CN in the wastes from any outlet into the public sewers.
4. 
Materials which would exert or cause:
a. 
Unusual concentration 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 and sodium sulfate).
b. 
Excessive discoloration, such as, but not limited to, dye wastes and vegetable tanning solutions.
c. 
Unusual biochemical oxygen demand, chemical oxygen demand or chlorine demand in excess of thirty (30) parts per million that will constitute a significant load on the sewage treatment works.
d. 
High hydrogen sulfide content.
e. 
Unusual volume of flow or concentration of wastes constituting "slugs", as defined herein shall be pretreated to a concentration acceptable to the City if such wastes can:
(1) 
Cause damage to collection facilities;
(2) 
Impair the process;
(3) 
Incur treatment cost exceeding those of normal sewage; or
(4) 
Render the water unfit for stream disposal or industrial use.
Where discharge of such wastes to a public sewer is not properly pretreated or otherwise corrected, the Enterprise Director may reject the wastes, terminate the sewer service or require control of the quantities and rates of the discharge of such wastes.
B. 
If the Enterprise Director permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the Enterprise Director subject to the requirements of all applicable Codes, ordinances and laws.