When used in this division, these terms shall be defined as follows:
Abnormal sewage.
Any industrial waste having a suspended solids or BOD content in excess of that found in normal sewage but which is otherwise acceptable into a public sewer under the terms of this division.
Abnormal sewage permit.
A permit approved by and received from the director permitting the discharge or deposit of abnormal sewage into a sanitary sewer upon payment of a surcharge.
Abnormal sewage surcharge.
The charge levied against any person for services rendered during treatment of abnormal sanitary sewage or waste. This charge is intended to partially defray the added cost of transporting and treating abnormal sewage or waste. This charge shall be in addition to the usual monthly charge for sanitary sewer service.
BOD.
Biochemical oxygen demand, the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure, as specified in Standard Methods, in five days at twenty degrees centigrade, expressed as parts per million by weight (milligrams per liter).
BOD strength index.
The measure of the biochemical oxygen demand content of sewage in parts per million (milligrams per liter).
Cooling water.
The water discharged from any system of condensation such as air conditioning, cooling or refrigeration. Cooling water shall not be discharged into any public sewer unless it is unpolluted and below one hundred fifty degrees Fahrenheit.
Director.
The superintendent of the waterworks department, or his authorized representative.
Garbage.
Solid waste from domestic or commercial preparation, cooking or dispensing of food or from the handling, storage and sale of produce.
Industrial waste.
Any and all liquid or waterborne waste from industrial or commercial processes, and does not include domestic sewage.
Industrial waste permit.
A permit to deposit or discharge industrial waste into any sanitary sewer in the city.
Normal sewage.
Sewage which, when analyzed, shows by weight a daily average of not more than two thousand five hundred parts per million gallons (three hundred parts per million) of suspended solids and not more than two thousand five hundred pounds per million gallons (three hundred parts per million) of BOD, and which is otherwise acceptable into a public sewer under the terms of this division.
Owner or occupant.
The person, firm or public or private corporation using the lot, parcel of land, building or premises connected to and discharging sewage, industrial wastewater or liquid into the sanitary sewage system of the city, and who pays, or is legally responsible for the payment of, water rates or charges made against the lot, parcel of land, building or premises if connected to the water distribution system of the city, or who would pay or be legally responsible for such payment if so connected.
Person.
Any individual, business entity, partnership, corporation, governmental agency or political subdivision.
pH.
The logarithm of the reciprocal of the weight of hydrogen ions, in grams per liter of solution, measured and calculated in accordance with Standard Methods.
Polluted water or waste.
Any water or liquid waste containing any of the following: phenols or other substances to an extent imparting taste and odor in receiving waters; toxic or poisonous substances in suspension, colloidal state or solution; noxious or odorous gases; more than one thousand parts per million, by weight, of dissolved solids, of which more than five hundred parts per million are chloride; more than fifteen parts per million each of suspended solids and/or BOD; color exceeding an objectionable limit; or having a pH value of less than 5.5 or more than 10.0; and/or any water or waste not approved for discharge into a stream or waterway by the appropriate state authority.
Properly shredded garbage.
Garbage that has been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than one-half inch in any dimension.
Public sewer.
Any publicly owned sanitary sewer, storm drain or watercourse.
Sanitary sewer.
A publicly owned pipe or conduit designed to collect and transport industrial waste and domestic sewage.
Sewage treatment plant.
Any arrangement of devices or structures used for treating sewage.
SS strength index.
The measure of the suspended solids content of sewage in parts per million (milligrams per liter).
Standard Methods.
Standard Methods for the Examination of Water and Wastewater, prepared and published jointly by the American Public Health Association, the American Waterworks Association and the Water Environment Federation, 12th edition, second printing, March 1966.
Strength index.
Means both the biochemical oxygen demand index and the suspended solids strength index.
Suspended solids.
Solids that either float on the surface of, or in suspension in, water, sewage or other liquid, and which are removable by laboratory filtering.
Unpolluted water or waste.
Any water or liquid waste containing none of the following: phenols or other substances to an extent imparting taste and odor in receiving waters; toxic or poisonous substances in suspension, colloidal state or solution; noxious or odorous gases; not more than one thousand parts per million by weight of dissolved solids, of which not more than five hundred parts per million are chloride; not more than five hundred parts per million are chloride [sic]; nor more than ten parts per million of each of suspended solids and BOD; color not exceeding an objectionable limit; nor a pH value of less than 5.5 nor higher than 10.0; and/or any water or waste approved for discharge into a stream or waterway by the appropriate state authority.
Wastewater.
Water that has been used by and discharged from an industry, commercial enterprise, household or other water consumer, which water may be either polluted or unpolluted.
(2001 Code, sec. 13.401)
The violation of any provision of this division relating to the pretreatment, disposition or discharge of an abnormal sewage surcharge [sic] shall be deemed an offense and punishable by a fine in accordance with the general penalty provision found in section 1.01.009 of this code, and each violation thereof, and each day on which there is a failure to comply with the terms of this division, shall be and is deemed to be a distinct and separate offense and punishable as such.
(2001 Code, sec. 13.413)
(a) 
It shall be unlawful for any person to discharge or cause to be discharged any polluted water or corrosive waste into any storm drain or watercourse within the city.
(b) 
No person shall discharge or cause to be discharged any stormwater, groundwater, roof runoff, subsurface drainage, or drainage from downspouts, yard drains, yard fountains and ponds, or lawn sprays into any sanitary sewer, except as provided by city ordinance. Water from swimming pools, [and] unpolluted industrial water, such as water drains, blow-off pipes, or cooling water from various equipment, shall not be discharged into sanitary sewers if a closed storm sewer is available. If a closed storm sewer is not available, such water may be discharged into the sanitary sewer by indirect connection whereby such discharge is cooled, if required, and flows into the sanitary sewer at a rate not in excess of five gallons per minute, provided that the waste does not contain materials or substances in suspension or solution in violation of the limits prescribed by this division.
(c) 
No person shall discharge or cause to be discharged into any public sewer any of the following described substances, materials, waters or waste:
(1) 
Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (sixty-five degrees centigrade);
(2) 
Any water or waste which contains wax, grease or oil, plastic or other substance that will solidify or become discernibly viscous at temperatures between thirty-two degrees to one hundred fifty degrees Fahrenheit;
(3) 
Flammable or explosive liquid, solid or gas, such as gasoline, kerosene, benzene, naphtha, etc.;
(4) 
Solid or viscous substances in quantities capable of causing obstruction in the flow in sewers or other interference with 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, whole blood, paunch manure, hair and fleshings, entrails, lime slurry, lime residues, slops, chemical residues, paint residues, or bulk solids;
(5) 
Any garbage that has not been properly comminuted or shredded. If properly comminuted or shredded, then it may be accepted if suitably pretreated;
(6) 
Any noxious or malodorous substances which can form a gas which, either singly or by interaction with other waste, is capable of causing objectionable odors or hazards to life or forming solids in concentrations exceeding limits established in this division, or creates any other condition deleterious to structures or treatment processes, or requires unusual provisions, attention or expense to handle such material. Any toxic or poisonous substances as defined by the state commission on environmental quality.
(d) 
No person shall discharge or cause to be discharged into any public sewer any of the following, except in quantities or concentrations or with provisions as stipulated in this subsection:
(1) 
Free or emulsified oil and grease exceeding one hundred parts per million (eight hundred thirty-four pounds per million gallons) of either or both, or combinations of, free or emulsified oil and grease;
(2) 
Acids or alkalis which attack or corrode sewers or sewage disposal structures or have a pH value lower than 5.5 or higher than 10.0;
(3) 
Salts of a heavy metal and/or other toxic material in concentrations exceeding those established by the state commission on environmental quality as effluent limitations, including, but not limited to, the following:
Chromium as Cr
3 parts per million
Copper as Cu
1.0 parts per million
Zinc as Zn
3 parts per million
Nickel as Ni
1.0 parts per million
Cadmium as CD
0.02 parts per million
or elements which will damage collection facilities or are detrimental to treatment process;
(4) 
Cyanide or cyanogen compounds in excess of two parts per million by weight as CN;
(5) 
Any water or waste that contains more than ten parts per million of the following gases: hydrogen sulphide, sulphur dioxide or nitrous oxide;
(6) 
Radioactive materials, in the absence of a specific permit issued by the director for the discharge of such waste.
(2001 Code, sec. 13.402)
It is unlawful for any person to deposit or discharge industrial waste into any sanitary sewer in the city without having first obtained an industrial waste permit from the city and having complied with all of the applicable provisions hereof. Within ninety days after the effective date of the ordinance codified in this division, any person desiring to deposit or discharge or who is now depositing or discharging industrial waste into any sanitary sewer in the city shall make application to the chief plumbing inspector for a permit. Application forms will be furnished by the chief plumbing inspector on request. The chief plumbing inspector shall refer all such applications to the director for his approval or disapproval. The director shall approve such applications and grant an industrial waste permit only when the evidence submitted by the applicant demonstrates that the waste or wastewater to be deposited by the applicant in the sanitary sewer will comply with all the regulations of this division.
(2001 Code, sec. 13.403)
Any person discharging industrial waste into a sanitary sewer in the city shall construct a suitable control manhole downstream from any treatment or storage tanks or other approved works utilized by such person for pretreatment, such control manhole to be for the purpose of facilitating observation, measurement and sampling of all waste created and discharged by such person. The control manhole shall be constructed at a location and in a manner approved by the director. The control manhole shall be constructed and installed at the expense of the person discharging the waste, and it shall be maintained at the expense of such person at all times in a safe, acceptable and proper operating condition.
(2001 Code, sec. 13.404)
If any person depositing or discharging industrial waste into the sanitary sewer fails to secure an industrial waste permit within the time prescribed in this division, or if any person allows or causes waste of unacceptable quality under the requirements of this division to be discharged into any sanitary sewer in the city, the director is authorized, if such person is using city water, to disconnect such person’s service line from the city water system and/or the city sanitary sewer system, and the same shall only be reconnected at the owner’s expense. If such person does not use city water, the director is authorized to disconnect such person’s service line from the city’s sanitary sewer system, and the same shall only be reconnected at the owner’s expense. The director shall notify the occupant or user of the premises where the waste is generated twenty-four hours before disconnecting the service line. No sanitary sewer connection or water connection disconnected hereunder shall be reconnected until the condition causing the disconnection has been corrected.
(2001 Code, sec. 13.405)
The inspectors, agents or representatives of the city charged with the enforcement of this division shall be deemed to be performing a governmental function for the benefit of the general public, and neither the city, the director nor the individual inspector, agent or representative shall ever be held liable for any loss or damage, whether real or asserted, caused or alleged to have been caused as a result of the performance of such governmental function. The owners or occupants of premises where industrial waste is created or discharged into the sanitary sewer shall allow the director and his inspectors, agents or representatives free access at all reasonable times to all parts of such premises for the purpose of inspection or sampling or the performance of any of their duties hereunder, and the failure or refusal of such owners or occupant to comply with this provision shall be grounds for the disconnection of water and/or sewer service.
(2001 Code, sec. 13.406)
(a) 
The volume of flow used in computing abnormal sewage surcharges shall be based upon metered water consumption as shown in the records of meter readings maintained by the water department. In the event that a person discharging waste into the city’s sanitary sewer system produces evidence to the director demonstrating that a substantial portion of the total amount of water used for all purposes does not reach the city’s sewer system, an estimated percentage of total water consumption to be used in computing charges may be established by the director.
(b) 
Any person discharging industrial waste into the sanitary sewers of the city who procures any part or all of his water supply from sources other than the water department, all or part of which is discharged into the sanitary sewer, shall install and maintain at his expense water meters of the type approved by the director for the purpose of determining the proper volume of flow to be used in computing sewer service charges. Such meters shall be read monthly and tested for accuracy when deemed necessary by the director. Where it can be shown to the satisfaction of the director that a substantial portion of the water as measured by the aforesaid meter or meters does not enter the sanitary sewer system of the city, then the director may require or permit the installation of additional meters at the owner’s expense in such manner as to measure the quantity of water actually entering the sanitary sewer system from the lot, parcel of land, building or premises of such owner or occupant, and the quantity of water used to determine the sewer service charge and abnormal sewage surcharge may be the quantity of water actually entering the sewer system as so determined, if the director so elects.
(c) 
If the director finds that it is not practicable to measure the quantity or quality of waste by the aforesaid meters or monitoring devices, he shall determine the quantity or quality of the waste in any manner or method he may find practicable in order to arrive at the percentage of water entering the sanitary sewer system of the city and/or the quality of the sewage to be used to determine the sewer service charge and surcharge.
(2001 Code, sec. 13.407)
The industrial waste discharged or deposited into the sanitary sewers shall be subject to periodic inspection and sampling as often as may be deemed necessary by the director. Samples shall be collected in such manner as to be representative of the character and concentration of the waste under operational conditions. The laboratory methods used in the examination of the waste shall be made by the director at such times and on such schedules as may be established by the director. Should an owner or occupant discharging industrial waste to the sanitary sewers desire a determination of the quality of such industrial waste be made at some time other than that scheduled by the director[, such special determination may be made by the director] at the expense of the owner or occupant discharging the waste.
(2001 Code, sec. 13.408)
Owners or occupants, or any other person, generating waste prohibited from discharge into public sewers by the foregoing shall pretreat or otherwise dispose of such prohibited waste so as to make the waste discharged to the public sewer acceptable under the standards established in this division.
(2001 Code, sec. 13.409)
(a) 
Persons generating abnormal sewage may discharge such sewage into the sanitary sewer provided:
(1) 
The waste will not cause damage to the collection system;
(2) 
The waste will not impair the treatment processes;
(3) 
The person discharging such waste pays a monthly surcharge to the water department in addition to the usual monthly sewer service charges. Computations of such surcharges shall be based on the following formula:
S = V x 62.4 x (0.011(BOD - 300) + 0.007(SS - 300))
S = Surcharge in dollars.
V = Water consumption in millions of cubic feet during the billing period.
62.4 = Pounds per cubic foot of water.
0.011 = Unit charge per pound for BOD in dollars.
BOD = BOD strength index in parts per million by weight.
300 = Normal BOD strength in parts per million by weight.
0.007 = Unit charge per pound for suspended solids in dollars.
SS = Suspended solids strength index in parts per million by weight.
300 = Normal suspended solids strength in parts per million by weight.
(b) 
Abnormal sewage surcharges payable under this section shall be as follows:
(1) 
Commencing January 1, 1970, thirty-three percent of charges computed by formula;
(2) 
Commencing October 1, 1970, sixty-six percent of charges computed by formula;
(3) 
Commencing October 1, 1971, one hundred percent of charges computed by formula.
(c) 
If the strength index for either BOD or SS is less than the normal strength index for that category, then there shall be no surcharge for that category, nor shall there be credit given to the total surcharge.
(2001 Code, sec. 13.410)
It shall be the responsibility of any person, owner or occupant discharging waste into the sanitary sewer system of the city to furnish the director with drawings or plans and specifications in such detail as he may require to determine if the pretreatment structure planned by such person, or in use by such person, is suitable for the purpose intended. However, the approval of such plans by the director will in no way relieve such person of the responsibility for modifying the structure, once constructed, as necessary to produce an effluent acceptable to the director under the terms of this division.
(2001 Code, sec. 13.411)
Drains receiving acid waste shall be constructed of any acid-resisting material. Such drains located outside of a building shall be constructed of vitrified clay or earthenware pipe or other approved acid-resisting material. Joints shall be constructed by caulking with asbestos rope wicking and by pouring a heated sulphur and carbon compound or a heated bituminous compound in such manner as to secure tight joints. In no case shall corrosive waste be discharged into a drain, sanitary sewer, storm sewer or soil or waste pipe without being first diluted or neutralized in such manner as to render such wastes noncorrosive. These wastes shall be treated by passing through a properly trapped dilution or neutralizing catchbasin, which shall function automatically.
(2001 Code, sec. 13.412)
It is determined and declared to be necessary for the due protection of the public health, safety and welfare of the city to establish and collect charges for the use of the wastewater system on all lots, lands and premises served by or having connection with the system.
(2001 Code, sec. 13.414)
The intent of this division is to ensure that each recipient of waste treatment services will pay its proportionate share of the costs of operation and maintenance (including replacement) and to provide the city’s waste treatment system with a self-sufficient source of funds with respect to operation and maintenance costs.
(2001 Code, sec. 13.415)
The funds received from the collection of the rates and charges provided in this division shall be deposited as received with the city secretary, who shall keep the same in a separate fund designated “wastewater operation and maintenance fund.” Subject to the provisions of any ordinance, moneys in said fund shall be used for the payment of the cost and expense of operation, maintenance, repair and management of the system.
(2001 Code, sec. 13.416)
The city manager shall review, not less often than every two years, the wastewater contribution of users and user classes, the total costs of operation and maintenance of the treatment works, and this user charge system. The city manager, with approval of the city council, shall revise the charges for users or user classes at that time to accomplish the following:
(1) 
Maintain the proportionate distribution of operation and maintenance costs among the users and user classes as required in this division;
(2) 
Generate sufficient revenue to pay the total operation and maintenance costs necessary to the proper operation and maintenance (including replacement) of the wastewater treatment system; and
(3) 
Apply excess revenues collected from a class of users to the costs of operation and maintenance attributable to that class for the next year and adjust the rate accordingly.
(2001 Code, sec. 13.417)
(a) 
The rate for user charges shall be based on the following formula:
UC = UCv + UCq
UC = VcVu + BcBu + ScSu
The symbols used in the above formula are defined as follows:
UC
=
Annual user charge.
Vc
=
Annual operation and maintenance cost for treatment of a unit of wastewater volume.
Vu
=
Annual volume contribution from a user.
Bc
=
Annual operation and maintenance cost for treatment of a unit of biochemical oxygen demand (BOD).
Bu
=
Annual BOD contribution from a user.
Sc
=
Annual operation and maintenance cost for treatment of a unit of suspended solids.
Su
=
Annual suspended solids contribution from a user.
(b) 
When a user or user class discharges wastewaters other than “normal sewage,” as defined in section 13.06.131 of this division, a surcharge shall be imposed to cover any added costs of collection and treatment. If the discharge contains BOD or suspended solids in excess of “normal sewage,” Bu and Su for the base user charge formula shall be adjusted. If any other identifiable pollutant is increasing the cost of treatment, the following term shall be added to the base formula: + PcPu. Pc is defined as “O&M cost for treatment of any pollutant.” Pu is defined as total contribution of any pollutant from a user per unit of time.
(2001 Code, sec. 13.418)
(a) 
For the purposes provided in section 13.06.195, the following shall be used as a basis for user charges for the ensuing year of operation of the wastewater treatment facility:
Vc = $0.164 per 1,000 gallons of wastewater
Bc = $0.081 per pound of BOD
Sc = $0.074 per pound of TSS
(b) 
For users who discharge wastewater defined in section 13.06.131 of this division as “normal sewage,” the user charge per one thousand gallons of wastewater will be based on two hundred milligrams per liter of BOD and two hundred twenty milligrams per liter of TSS. The resulting charge for dischargers of normal domestic wastewater shall be as provided for in the fee schedule found in appendix A of this code.
(c) 
For the purposes of sections 13.06.200 and 13.06.201 [13.06.201], the return of wastewater to the wastewater treatment system shall be assumed to be seventy percent of the quantity of water used. The resulting charge for “normal sewage” determined by sections 13.06.200 and 13.06.201 [13.06.201] shall be as provided for in the fee schedule found in appendix A of this code.
(2001 Code, sec. 13.419; Ordinance adopting Code)
Any user which discharges any toxic pollutants which cause an increase in the cost of managing the effluent or the sludge of the city’s treatment works shall pay for such increased costs.
(2001 Code, sec. 13.420)
Each user shall be notified, at least annually, in conjunction with a regular bill, of the rate and that portion of the user charges which is attributable to wastewater treatment services.
(2001 Code, sec. 13.421)
This division shall take precedence over any terms or conditions of agreements or contracts between the city and wastewater treatment system users which are inconsistent with the requirements of section 204(b)(1)(A) of the Clean Water Act (33 USC 1251 et seq., as amended).
(2001 Code, sec. 13.422)
The wastewater charges levied at the rates established by section 13.06.195 [13.06.196] shall be effective upon the date of adoption of the ordinance codified in this division. Bills are due when rendered and become past due if not paid after the 10th day of each month. Service to customers having past-due bills will be discontinued as provided in the city’s service regulations.
(2001 Code, sec. 13.423; Ordinance adopting Code)
The city council shall make and enforce such rules and regulations as it may deem necessary for the enforcement of the provisions of this division, for the proper determination and collection of the rates and charges herein provided and for the safe, efficient and economical management of the system, and such rules and regulations, when not repugnant to existing ordinances of the city or the laws of the state, shall have the same force and effect as ordinances of the city council.
(2001 Code, sec. 13.427)