[Ord. No. 3761 §1, 2-20-2008]
A. 
No person shall discharge or cause to be discharged any stormwater, surface water, ground water, roof runoff, subsurface drainage including interior and exterior foundation drains, areaway drains, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer.
B. 
Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers or to a natural outlet approved by the Street Superintendent. Industrial cooling water or unpolluted process waters may be discharged, on approval of the Street Superintendent, to a storm sewer or natural outlet.
[Ord. No. 3761 §1, 2-20-2008]
A. 
No person shall discharge or cause to be discharged any of the 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) mg/l as CN in the wastes as discharged to the public 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 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 and paper dishes, cups, mild containers, etc., either whole or ground by garbage grinders.
[Ord. No. 3761 §1, 2-20-2008]
A. 
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 Superintendent, that such wastes can harm the sewers, sewage treatment process or equipment, have an adverse effect on the receiving stream or otherwise endanger life, limb or public property or constitute a nuisance. In forming his/her opinion as to the acceptability of these wastes, the Superintendent 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. 
Liquids over one hundred fifty degrees Fahrenheit. Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (150°F) (sixty-five degrees Centigrade (65°C)).
2. 
Fats, grease and oils. Any water or wastes 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 and one hundred fifty degrees Fahrenheit (32°F — 150°F) (zero and sixty-five degrees Centigrade (0 — 65°C)).
3. 
Improperly shredded garbage. Any garbage that has not been properly shredded. The installation and operation of any garbage grinder with a motor of three-fourths (¾) horsepower (0.76 horsepower metric) or greater shall be subject to the review and approval of the Superintendent.
4. 
Acid wastes. Any waters or wastes containing strong acid iron pickling wastes or concentrated plating solutions, whether neutralized or not.
5. 
Heavy metal wastes. 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 works exceeds the limits established by the Superintendent for such materials.
6. 
Taste- and odor-producing substances. Any waters or wastes containing phenols or other taste- or odor-producing substances in such concentrations exceeding limits which may be established by the Superintendent as necessary, after treatment of the composite sewage, to meet the requirements of State, Federal or other public agencies or jurisdictions for such discharge to the receiving waters.
7. 
Radioactive wastes. Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable State or Federal regulations.
8. 
Highly alkaline wastes. Any waters or wastes having a pH in excess of 9.5.
9. 
Miscellaneous substances. 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 resides) 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. 
Substances not amenable to treatment. 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.
11. 
High BOD and/or suspended solids wastes. Any waters or wastes having:
a. 
A five (5) day BOD greater than three hundred (300) parts per million by weight; or
b. 
Containing more than three hundred fifty (350) parts per million by weight of suspended solids; or
c. 
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 Superintendent.
12. 
Where necessary, in the opinion of the Superintendent, the owner shall provide, at his/her expense, such preliminary treatment as may be necessary to:
a. 
Reduce the biochemical oxygen demand to three hundred (300) parts per million by weight; or
b. 
Reduce the suspended solids to three hundred fifty (350) parts per million by weight; or
c. 
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 Superintendent and no construction of such facilities shall be commenced until such approvals are obtained in writing.
[Ord. No. 3761 §1, 2-20-2008]
A. 
If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in Section 710.310 and which, in the judgment of the Superintendent, may have a deleterious effect upon the sewage works, processes, equipment or receiving waters or which otherwise create a hazard to life to constitute a public nuisance, the Superintendent may:
1. 
Reject the wastes;
2. 
Require pretreatment to an acceptable condition for discharge to the public sewers;
3. 
Require control over the quantities and rates of discharge; and/or
4. 
Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of Section 710.360.
B. 
If the Superintendent 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 Superintendent and subject to the requirements of all applicable codes, ordinances and laws.
[Ord. No. 3761 §1, 2-20-2008]
Grease, oil and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts or any flammable wastes, sand or other harmful ingredients; except, that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved in accordance with the Grease Management Program Specifications. Three (3) copies of the specifications are on file in the office of the City Clerk of the City of De Soto, Missouri, being marked and designated as the "Grease Management Program Specifications".
[Ord. No. 3761 §1, 2-20-2008]
When required by the Superintendent, the owner of any property serviced by a building sewer carrying industrial wastes shall install a suitable control manhole, together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the wastes. Such manhole, when required, shall be accessible and safely located and shall be constructed in accordance with plans approved by the Superintendent. The manhole shall be installed by the owner at his/her expense and shall be maintained by him/her so as to be safe and accessible at all times.
[Ord. No. 3761 §1, 2-20-2008]
All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in this Article shall be determined in accordance with the latest edition of "Standard Methods for the Examination of Water and Wastewater" published jointly by the American Public Health Association, American Waterworks Association and the Water Pollution Control Federation and shall be determined at the control manhole provided or upon suitable samples taken at such control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property. (The particular analyses involved will determine whether a twenty-four (24) hour composite of all outfalls of a premises is appropriate or whether grab samples should be taken. Normally, but not always, BOD and suspended solids analyses are obtained from twenty-four (24) hour composites of all outfalls, whereas pHs are determined from periodic grab samples.) The cost of any analysis required by the City shall be borne by the owner.
[Ord. No. 3761 §1, 2-20-2008]
No statement contained in this Article shall be construed as preventing any special agreement or arrangement between the City and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the City for treatment, subject to payment therefore by the industrial concern.