[Ord. No. 45-1999, § 600.1, 2-1-2000]
No person shall cause a connection to be made to a City sanitary sewer which shall discharge, or cause to be discharged, any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer. No direct connection shall be made from a public or private water supply to a building drain discharging to any sanitary sewer.
[Ord. No. 45-1999, § 600.2, 2-1-2000]
Stormwater and all other unpolluted drainage may be discharged to such sewers as are specifically designated as storm sewers, or to a natural outlet approved by the City. Industrial cooling water or unpolluted process waters may be discharged, on approval of the City, to a storm sewer or natural outlet, if in accordance with regulations of the state department of environmental protection.
[Ord. No. 45-1999, § 600.3, 2-1-2000]
Except as provided in this article, no person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:
(1) 
Any liquid or vapor having a temperature higher than 150° F. (65° C.).
(2) 
Any waters or wastes which contain fats, grease or oil, or other substances in excess of 100 mg/l, whether emulsified or not, that will solidify or become viscous at temperatures between 32° F. and 150° F.
(3) 
Any waters or wastes containing soluble fats, grease or oils, whether emulsified or not, exceeding an average 100 parts per million, which, in the opinion of the City, may overload or inhibit the pollution control facility's processes.
(4) 
Any gasoline, benzene, naphtha, fuel oil, mineral oil, or other flammable or explosive liquid, solid or gas.
(5) 
Any noxious or malodorous gas such as hydrogen sulfide, sulfur dioxide or nitrous oxide, or other substances which, either singly or by interaction with other wastes, are capable of creating a public nuisance or hazard to life or of preventing entry into sewers for their maintenance and repair.
(6) 
Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of 3/4 horsepower or greater shall be subject to the review and approval of the City.
(7) 
Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastic, cardboard, wood, paunch manure, hair and fleshings, entrails, lime slurry, lime residues, beer or distillery slops, whey, chemical residues, paint residues, cannery waste, bulk solids, or other solid or viscous substance capable of causing obstruction to the flow of the sewers or other interference with proper operation of the sewage works.
(8) 
Any waters or wastes, acid and alkaline in reaction, having corrosive properties capable of causing damage or hazard to structures, equipment and personnel of the sewage works. Free acids and alkalis must be neutralized at all times, within a permissible pH range of 6.0 to 9.5.
(9) 
Radioactive wastes or isotopes of halflife or concentrations as may exceed limits established by the City in compliance with applicable state or federal regulations.
(10) 
Quantities of flow, or concentrations of any wastewater constituent, or both, which would constitute a slug.
(11) 
Any stormwater, roof drainage, spring water, cistern or tank overflow, footing drainage, or discharge from any vehicle wash rack or water motor, or the contents of any privy vault, septic tank or cesspool, or the discharge of effluent from any air conditioning machine or refrigeration unit.
(12) 
Any waters or wastes containing a toxic or poisonous substance, high chlorine or oxygen demand, or suspended solids in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create any hazard or violation in the receiving waters or effluent of the City's sewage treatment plant, or contaminate or restrict the final end use of the treatment plant's sludge residuals. Such toxic substances shall be limited to the average concentrations listed in this subsection in the sewage as it leaves the building sewer, and at no time shall the hourly concentration at the sewage treatment plant exceed three times the average concentration. If concentrations listed are exceeded, individual establishments will be subject to control by the City in volume and concentration of wastes discharged.
Limits of Toxic Substances in Sewage
Iron, as Fe
5.0 ppm
Chromium, as Cr (hexavalent)
1.0 ppm
Copper, as Cu
1.0 ppm
Chlorine demand
15.0 ppm
Phenol
0.5 ppm
Cadmium, as Cd
0.5 ppm
Zinc, as Zn
0.5 ppm
Nickel
1.0 ppm
Mercury, as Hg
0.0 ppm
The City may periodically modify this list of regulated toxic substances and allowable concentrations in accordance with federal Environmental Protection Agency protocol for the development of technically based local limits. The City will provide advance written notice of new local limits to users prior to initiating enforcement actions.
(13) 
Waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions, whether neutralized or not.
(14) 
Waters or wastes containing phenols, or other taste- or odor-producing substances, in such concentrations exceeding limits which may be established by the City as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal, or other public agencies of jurisdiction for such discharge to the receiving waters.
(15) 
Waters or wastes containing substances which are not amenable to treatment or reduction by the waste treatment processes employed, which may inhibit treatment plant processes or sludge quality or disposal, or which are amenable to treatment only to such degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over the discharge to the receiving waters.
(16) 
Any heated waters or pollutants in amounts which will inhibit or interfere with biological activity in the City's wastewater treatment facilities, but in no case heated waters or pollutants in such quantities that the temperature at the pollution control facility's influent exceeds 104° F. (40° C.).
(17) 
Any waters or wastes containing color, dissolved solids, or dye which would cause a visible discoloration of the treatment's plant's effluent or receiving water.
(18) 
Any waters or wastes containing suspended solids, whether inert or organic, which would cause visible turbidity of the treatment plant's effluent or receiving water.
(19) 
Any waters, wastes or substance which would cause the treatment plant's effluent to exceed toxicity testing limits as may be required by applicable state or federal law.
(20) 
Any boiler blowoffs or sediment trap wastes.
(21) 
Any septage or septic process discharge without the express written approval of the City.
[Ord. No. 45-1999, § 600.4, 2-1-2000]
(a) 
Any discharge of waters or wastes having any of the following characteristics shall be subject to the review and approval of the City:
(1) 
Having a five-day biochemical oxygen demand greater than 300 parts per million;
(2) 
Containing more than 350 parts per million of suspended solids;
(3) 
Containing more than 15 parts per million of chlorine demand;
(4) 
Containing any quantity of substances having the characteristics described in this division; or
(5) 
Having an average daily flow or pollutant mass greater than 2% of the average daily sewage flow of the City.
(b) 
Where necessary, in the opinion of the City, the owner shall provide, at his expense, such pretreatment as may be necessary to:
(1) 
Reduce the biochemical oxygen demand to 300 parts per million and the suspended solids to 350 parts per million by weight;
(2) 
Reduce the chlorine demand to 15 parts per million;
(3) 
Reduce objectionable characteristics or constituents to within the maximum limits provided for in this division; or
(4) 
Control the quantities and rates of discharge of such waters or wastes.
Plans, specifications, and any other pertinent information relating to proposed pretreatment facilities shall be submitted for the approval of the City, and no construction of such facilities shall be commenced until such approvals are obtained in writing. Failure to comply with one or more of the remedial procedures as required by the City will constitute a violation of this article.
[Ord. No. 45-1999, § 600.5, 2-1-2000]
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 accepted edition of Standard Methods for the Examination of Water and Wastewater, upon suitable samples taken at a control manhole as provided for in division 7 of this article. If no manhole has been required, the manhole shall be considered to be the nearest downstream manhole in the public sewer from the point at which the building sewer is connected.
[Ord. No. 45-1999, § 600.6, 2-1-2000]
No statement contained in this division 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 therefor by the industrial concern.
[Ord. No. 45-1999, § 600.7, 2-1-2000]
All of the standards in this division are to apply at the point where the industrial wastes are discharged into the public sanitary sewer system, and any pretreatment required must be accomplished to practical completion before the wastes reach that point. The laboratory methods used in the examination of all industrial wastes shall be those set forth in the latest accepted edition of Standard Methods for the Examination of Water and Wastewater. However, alternate methods for the analysis of industrial wastes may be used subject to mutual agreement between the City and the producer of such wastes. The frequency and duration of the sampling of any industrial waste shall not be less than once every three months for a twenty-four-hour period. However, more frequent and longer periods may be required at the discretion of the City.
[Ord. No. 45-1999, § 600.8, 2-1-2000]
(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 this division and which, in the judgment of the City, may have a deleterious effect upon the sewage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the City may:
(1) 
Reject the wastes and require separate treatment;
(2) 
Require pretreatment to an acceptable condition before discharge to the public sewers;
(3) 
Require control over the quantities and rates of discharge; and/or
(4) 
Require payment under the provisions of this article to cover the added cost of handling and treating of such wastes.
(b) 
If the City permits the pretreatment or equalization of waste flows, the design and installation of plants and equipment shall be subject to the review and approval of the City, and subject to the requirements of all applicable codes, ordinances and laws, including federal Environmental Protection Agency pretreatment standards.