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Chapter 715: PUBLIC AND PRIVATE SEWERS

Cross Reference — As to water and sewer rates and charges, see ch. 705.

Section 715.010.  Rules and Regulations. [Ord. No. 87-02 Art. I, §1, 1-22-1987]

The following rules and regulations are hereby adopted to govern the sewer services furnished by the municipality in a uniform manner for the benefit of the municipality and its sewer users. They are subject to change from time to time. If any portion of these rules shall be declared invalid by competent authority, such voidance shall not affect the validity of the remaining portions. 

Section 715.020.  Definitions. [Ord. No. 87-02 Art. II §§1 — 25, 1-22-1987]

Unless the context specifically indicates otherwise, the meaning of terms used in this Chapter shall be as follows: 

APPLICANT — Any individual, firm, partnership, corporation or other agency owning land within the municipality applying for a sewer service.  

BOARD — The person or persons duly authorized by the City of La Plata to inspect and approve the installation of building sewers and their connection to the public sewer system.  

BOD (denoting BIOCHEMICAL OXYGEN DEMAND) — The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five (5) days at twenty degrees Centigrade (20°C), expressed in milligrams per liter.  

BUILDING DRAIN — That part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer, beginning five (5) feet (1.5 meters) outside the inner face of the building wall.  

BUILDING SEWER — The extension from the building drain to the public sewer or other place of disposal.  

COMBINED SEWER — A sewer receiving both surface runoff and sewage.  

GARBAGE — Solid wastes from the domestic and commercial preparation, cooking and dispensing of food, and from the handling, storage and sale of produce.  

INDUSTRIAL WASTES — The liquid wastes from industrial manufacturing processes, trade, or business as distinct from sanitary sewage.  

MUNICIPALITY — The City of La Plata, Missouri.  

NATURAL OUTLET — Any outlet from a watercourse, pond, ditch, lake or other body of surface or ground water.  

PERSON — Any individual, firm, company, association, society, corporation or group.  

pH — The logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.  

PROPERLY SHREDDED GARBAGE — The wastes from the preparation, cooking, and dispensing of food 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 (½) inch (1.27 centimeters) in any dimension.  

PUBLIC SEWER — A sewer in which all owners of abutting properties have equal rights, and is controlled by public authority.  

SANITARY SEWER — A sewer which carries sewage and to which storm, surface, and ground waters are not intentionally admitted.  

SEWAGE — A combination of the water-carried wastes from residences, business buildings, institutions and industrial establishments, together with such ground, surface, and storm waters as may be present.  

SEWAGE TREATMENT PLANT — Any arrangement of devices and structures used for treating sewage.  

SEWAGE WORKS — All facilities for collecting, pumping, treating and disposing of sewage.  

SEWER — A pipe or conduit for carrying sewage.   

SHALL — Is mandatory; MAY — is permissive.  

SLUG — Any discharge of water, sewage, or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than fifteen (15) minutes more than five (5) times the average twenty-four (24) hours' concentration or flows during normal operation.  

STORM DRAIN (sometimes termed STORM SEWER) — A sewer which carries storm and surface waters and drainage, but excludes sewage and industrial wastes, other than unpolluted cooling water.  

SUPERINTENDENT — The Superintendent of the Municipal Sewage Works of the City of La Plata, or his/her authorized deputy, agent or representative.  

SUSPENDED SOLIDS — Solids that either float on the surface of, or are in suspension in water, sewage, or other liquids, and which are removable by laboratory filtering.  

WATERCOURSE — A channel in which a flow of water occurs either continuously or intermittently.  

Section 715.030.  Unlawful to Place Garbage on Public or Private Property. [Ord. No. 87-02 Art. III §1, 1-22-1987]

It shall be unlawful for any person to place, deposit or permit to be deposited in any unsanitary manner on public or private property within the City of La Plata, or in any area under the jurisdiction of said City, any human or animal excrement, garbage, or other objectionable waste. 

Section 715.040.  Unlawful to Discharge Sewage to Any Natural Outlet. [Ord. No. 87-02 Art. III §2, 1-22-1987]

It shall be unlawful to discharge to any natural outlet within the City of La Plata, or in any area under the jurisdiction of said City, any sewage, or other polluted waters, except where suitable treatment has been provided in accordance with subsequent provisions of this Chapter. 

Section 715.050.  Privy, Septic Tank, Etc., Prohibited. [Ord. No. 87-02 Art. III §3, 1-22-1987]

Except as hereinafter provided, it shall be unlawful to construct or maintain any privy, privy vault, septic tank, cesspool, or other facility intended or used for the disposal of sewage. 

Section 715.060.  Buildings Must Have Toilet Facilities. [Ord. No. 87-02 Art. III §4, 1-22-1987]

The owner of all houses, buildings, or properties used for human occupancy, employment, recreation or other purposes situated within the City and abutting on any street, alley or right-of-way in which there is now located or may in the future be located a public sanitary or combined sewer of the City, is hereby required at his/her expense to install suitable toilet facilities therein, and to connect such facilities directly with the proper public sewer in accordance with the provisions of this Chapter, within ninety (90) days after date of official notice to do so, provided that said public sewer is within one hundred (100) feet (30.5 meters) of the property line. 

Section 715.070.  Private Sewage Disposal. [Ord. No. 87-02 Art. IV §§1 — 8, 1-22-1987] 

 A.    Where a public sanitary or combined sewer is not available under the provisions of Section 715.060, the building sewer shall be connected to a private sewage disposal system complying with the provisions of this Section. 
 B.    Before commencement of construction of a private sewage disposal system the owner shall first obtain a written permit signed by the Superintendent. The application for such permit shall be made on a form furnished by the City, which the applicant shall supplement by any plans, specifications, and other information as are deemed necessary by the Superintendent. A permit and inspection fee of ten dollars ($10.00) shall be paid to the City at the time the application is filed. 
 C.    A permit for a private sewage disposal system shall not become effective until the installation is completed to the satisfaction of the Superintendent. He/she shall be allowed to inspect the work at any stage of construction and, in any event, the applicant for the permit shall notify the Superintendent when the work is ready for final inspection, and before any underground portions are covered. The inspection shall be made within four (4) hours of receipt of notice by the Superintendent if received in the forenoon and within eighteen (18) hours of receipt of notice if received in the afternoon. 
 D.    The type, capacities, location, and layout of a private sewage disposal system shall comply with all recommendations of the Department of Public Health of the State of Missouri. No permit shall be issued for any private sewage disposal system employing subsurface soil absorption facilities where the area of the lot is less than fifteen thousand (15,000) square feet. No septic tank or cesspool shall be permitted to discharge to any natural outlet. 
 E.     At such times as a public sewer becomes available to a property served by a private sewage disposal system, as provided in Subsection (D) hereof, a direct connection shall be made to the public sewer in compliance with this Chapter, and any septic tanks, cesspools, and similar private sewage disposal facilities shall be abandoned and filled with suitable material. 
 F.     The owner shall operate and maintain the private sewage disposal facilities in a sanitary manner at all times at no expense to the City. 
 G.    No statement contained in this Subsection shall be construed to interfere with any additional requirements that may be imposed by the Health Officer of the State or County. 
 H.    When a public sewer becomes available, the existing building sewer shall be connected to said sewer within sixty (60) days and the private sewage disposal system shall be cleaned of sludge and filled with clean back-run gravel or dirt.   

Section 715.080.  Public Sewers. [Ord. No. 87-02 Art. V §§1 — 11, 1-22-1987; Ord. No. 832 §1, 10-22-2002] 

 A.    No unauthorized person shall uncover, make any connections with or opening into, use, alter, or disturb any public sewer or appurtenance thereto without first obtaining a written permit from the Superintendent. 
 B.    There shall be two (2) classes of building sewer permits: 
  1.       For residential and commercial service, and 
  2.       For service to establishments producing industrial wastes.

              In either case, the owner or his/her agent shall make application on a special form furnished by the City. The permit application shall be supplemented by any plans, specifications, or other information considered pertinent in the judgment of the Superintendent. A permit and inspection fee of fifteen dollars ($15.00) for a residential or commercial building sewer permit shall be paid to the City at the time the application is filed.        

 C.    All costs and expenses incident to the installation and connection of the building sewer shall be borne by the owner. The owner shall indemnify the City from any loss or damage that may directly or indirectly be occasioned by the installation of the building sewer. 
 D.    A separate and independent building sewer shall be provided for every building; except where one (1) building stands at the rear of another on an interior lot and no private sewer is available or can be constructed to the rear building through an adjoining alley, court, yard, or driveway, the building sewer from the front building may be extended to the rear building and the whole considered as one (1) building sewer. 
 E.     Old building sewers may be used in connection with new buildings only when they are found on examination and test by the Superintendent to meet all requirements of this Chapter. 
 F.    The size, slope, alignment, materials of construction of a building sewer, and the methods to be used in excavating, placing of the pipe, jointing, testing, and backfilling the trench shall all conform to the requirements of the Building and Plumbing Code or other applicable rules and regulations of the City. The minimum requirements shall be: 
  1.       All sewer lines shall be PVC SCH. 40 and shall be made water-tight with solvent weld or mechanical joints. 
  2.       All sewer lines shall be placed upon clean three-eighths (⅜ inch rock chips with a minimum of one-fourth (¼) inch fall per one (1) foot of travel. The rate of fall shall be measured along the actual laid sewer pipe by the Sewer Superintendent to determine compliance prior to the contractor/owner covering said pipe. 
  3.       Either the owners or contractors shall perform all taps or opening cuts into the City sewer main with the Sewer Superintendent in attendance or under his supervision. All taps shall be made with a saddle of the proper size. All taps shall be water-tight either by stainless steel, U-bolts or bands. 
  4.       The minimum diameter of sewer line for a residential user of six (6) family members or less shall be a minimum of four (4) inches. Business and industrial users plus residential users of more than six (6) residents shall use a pipe diameter as to be determined by the Sewer Superintendent. 
  5.       No part of the private sewer line may be covered until final inspection and approval by the Sewer Superintendent. After approval, the contractor/owner shall cover the sewer line by hand using three-eighths (⅜ inch clean gravel chips until the pipe has been completely covered.   
 G.    Whenever possible, the building sewer shall be brought to the building at an elevation below the basement floor. In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sanitary sewage carried by such building drain shall be lifted by an approved means and discharged to the building sewer. 
 H.    No person shall make connection of roof downspouts, exterior foundation drains, areaway drains, or other sources of surface runoff or ground water to a building sewer or building drain which in turn is connected directly or indirectly to a public sanitary sewer. 
 I.      The connection of the building sewer into the public sewer shall conform to the requirements of the Building and Plumbing Code or other applicable rules and regulations of the City or the procedures set forth in appropriate specifications of the A.S.T.M. and the W.P.C.F. Manual of Practice No. 9. All such connections shall be made gastight and watertight. Any deviation from the prescribed procedures and materials must be approved by the Superintendent before installation. 
 J.     The applicant for the building sewer permit shall notify the Superintendent when the building sewer is ready for inspection and connection to the public sewer. The connection shall be made under the supervision of the Superintendent or his/her representative. 
 K.    All excavations for building sewer installations shall be adequately guarded with barricades and lights so as to protect the public from hazard. Streets, sidewalks, parkways and other public property disturbed in the course of the work shall be restored in a manner satisfactory to the City.   

Section 715.090.  Discharge of Stormwater, Drain Water, Etc., to Any Sanitary Sewer. [Ord. No. 87-02 Art. VI §1, 1-22-1987]

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, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer. 

Section 715.100.  Unpolluted Drainage Discharged to Storm Sewer. [Ord. No. 87-02 Art. VI §2, 1-22-1987]

Stormwater 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 Superintendent. Industrial cooling water or unpolluted process waters may be discharged, on approval of the Superintendent, to a storm sewer, combined sewer, or natural outlet. 

Section 715.110.  Toxic Wastes Shall Not Be Discharged to Public Sewers. [Ord. No. 87-02 Art. VI §3, 1-22-1987] 

 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 cyanide 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.  A five (5) day biochemical oxygen demand greater than three hundred (300) parts per million by weight, 
           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. Where necessary in the opinion of the Superintendent, the owner shall provide at his/her expense, such preliminary treatment as may be necessary to:        

     

  1.     Reduce the biochemical oxygen demand to three hundred (300) parts per million by weight,  
  2.     Reduce the suspended solids to three hundred fifty (350) parts per million by weight, or  
  3.     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 said approvals are obtained in writing.        

        

  1.       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 fleshing, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.     

Section 715.120.  Substances That May Damage Sewage System. [Ord. No. 87-02 Art. VI §4, 1-22-1987] 

  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 either the sewers, sewage treatment process, or equipment, have an 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 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.       Any liquid or vapor having a temperature higher than one hundred fifty degrees Fahrenheit (150°F) (65°C). 
  2.       Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of one hundred (100) mg/1 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) (0° and 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 (¾) horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the Superintendent. 
  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 Superintendent 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 Superintendent as necessary, after treatment of the composite sewage, to meet the requirements of State, Federal or other public agencies having jurisdiction over discharge to the receiving waters. 
  7.       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.       Any waters or wastes having a pH in excess of 9.5. 
  9.       Materials which exert or cause: 
            a.   Unusual concentrations of inert suspended solids (such as, but not limited to, Fullers 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.   
  1.     Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment process 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.     

Section 715.130.  Superintendent's Authorities. [Ord. No. 87-02 Art. VI §5, 1-22-1987] 

 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 715.120 and which in the judgment of the Superintendent may have 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 Superintendent may: 
  1.       Reject the wastes, 
  2.       Require pre-treatment to an acceptable condition for discharge to the public sewers, 
  3.       Require control over the quantities and rates of discharge, and/or 

Chapter 720: USER CHARGE SYSTEM

Section 720.010.  Purpose. [Ord. No. 87-01 Art. I, 1-22-1987; Ord. No. 738 Art. I, 6-27-2000; Ord. No. 760 Art. I, 1-16-2001; Ord. No. 765 Art. I, 3-28-2001]

It is determined and declared to be necessary and conducive to the protection of the public health, safety, welfare and convenience of the City to collect charges from all users who contribute wastewater to the City's treatment works. The proceeds of such charges so derived will be used for the purpose of operating, maintaining and retiring the debt for such public wastewater treatment works. 

Section 720.020.  Definitions. [Ord. No. 87-01 Art. II §§1 — 11, 1-22-1987; Ord. No. 738 Art. II, 6-27-2000; Ord. No. 760 Art. II, 1-16-2001; Ord. No. 765 Art. II, 3-28-2001]

Unless the context specifically indicates otherwise, the meaning of terms used in this Chapter shall be as follows: 

BOD (denoting BIOCHEMICAL OXYGEN DEMAND) — The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five (5) days at twenty degrees Centigrade (20°C), expressed in milligrams per liter (mg/l).  

NORMAL DOMESTIC WASTEWATER — Wastewater that has a BOD concentration of not more than two hundred fifty (250) mg/l and a suspended solids concentration of not more than two hundred seventy (270) mg/l.  

OPERATION AND MAINTENANCE — All expenditures during the useful life of the treatment works for materials, labor, utilities and other items which are necessary for managing and maintaining the sewage works to achieve the capacity and performance for which such works were designed and constructed.  

REPLACEMENT — Expenditures for obtaining and installing equipment, accessories or appurtenances which are necessary during the useful life of the treatment works to maintain the capacity and performance for which such works were designed and constructed. The term "operation and maintenance" includes replacement.  

RESIDENTIAL CONTRIBUTOR — Any contributor to the City's treatment works whose lot, parcel of real estate, or building is used for domestic dwelling purposes only.  

SHALL — Is mandatory; MAY — is permissive.  

SS (denoting SUSPENDED SOLIDS) — Solids that either float on the surface of or are in suspension in water, sewage or other liquids and which are removable by laboratory filtering.  

TREATMENT WORKS — Any devices and systems for the storage, treatment, recycling and reclamation of municipal sewage, domestic sewage or liquid industrial wastes. These include intercepting sewers, outfall sewers, sewage collection systems, individual systems, pumping, power and other equipment and their appurtenances; extensions, improvements, remodeling, additions and alterations thereof; elements essential to provide a reliable recycled supply such as standby treatment units and clear well facilities; and any works, including site acquisition of the land, that will be an integral part of the treatment process or is used for ultimate disposal of residues resulting from such treatment (including used for storage of treated wastewater in land treatment systems before land application); or any other method or system for preventing, abating, reducing, storing, treating, separating or disposing of municipal waste or industrial waste, including waste in sanitary sewer systems.  

USEFUL LIFE — The estimated period during which a treatment works will be operated.  

USER CHARGE — That portion of the total wastewater service charge which is levied in a proportional and adequate manner for the cost of operation, maintenance and replacement of the wastewater treatment works.  

WATER METER — A water volume measuring and recording device furnished and/or installed by the City of La Plata or furnished and/or installed by a user and approved by the City of La Plata.  

Section 720.030.  User Charge Accounts. [Ord. No. 87-01 Art. III §§1 — 3, 1-22-1987; Ord. No. 738 Art. III, 6-27-2000; Ord. No. 760 Art. III, 1-16-2001; Ord. No. 765 Art. III, 3-28-2001] 

 A.    The user charge system shall generate adequate annual revenues to pay the costs of annual operation and maintenance including replacement and cost associated with debt retirement of bonded capital associated with financing the treatment works which the City may by ordinance designate to be paid by the user charge system. That portion of the total user charge which is designated for operation and maintenance, including replacement of the treatment works, shall be established by this Chapter. 
 B.    That portion of the total user charge collected which is designated for the operation and maintenance, including replacement purposes as established in Section 720.040, shall be deposited in a separate non-lapsing fund known as the Operation, Maintenance and Replacement Fund and will be kept in two (2) primary accounts as follows: 
  1.       The Operation and Maintenance Account shall be an account designated for the specific purpose of defraying operation and maintenance costs (excluding replacement) of the treatment works. Deposits in the Operation and Maintenance Account shall be made at least annually from the operation and maintenance revenue in the amount of one hundred twenty thousand three hundred thirty dollars ($120,330.00) annually. 
  2.       The Replacement Account shall be an account designated for the purpose of ensuring replacement needs over the useful life of the treatment works. Deposits in the Replacement Account shall be made at least annually from the replacement revenue in the amount of six thousand three hundred seventy dollars ($6,370.00) annually.   
 C.    Fiscal year-end balances in the Operation and Maintenance Account and the Replacement Fund shall be shall be carried over to the same accounts in each subsequent fiscal year and shall be used for no other purposes than those designated for these accounts. Monies which have been transferred from other sources to meet temporary shortages in the Operation, Maintenance and Replacement Fund shall be returned to their respective accounts upon appropriate adjustment of the user charge rates for operation, maintenance and replacement. The user charge rate(s) shall be adjusted such that the transferred monies will be returned to their respective accounts within the fiscal year following the fiscal year in which the monies were borrowed.   

Section 720.040.  User Charge Rates. [Ord. No. 87-01 Art. IV §§1 — 3, 1-22-1987; Ord. No. 738 Art. IV, 6-27-2000; Ord. No. 760 Art. IV, 1-16-2001; Ord. No. 765 Art. IV, 3-28-2001; Ord. No. 14-05 § 1, 9-8-2014; Ord. No. 17-05 § 1, 3-14-2017] 

 A.    Each user shall pay for the services provided by the district based on its use of the treatment works as determined by water meter(s) acceptable to the City. 
 B.    For residential contributors, monthly user charges will be based on water used during the current month. 
C.    For industrial and commercial contributors, user charges shall be based on water used during the current month. If a commercial or industrial contributor has a consumptive use of water, or in some other manner uses water which is not returned to the wastewater collection system, the user charge for that contributor may be based on wastewater meter(s) or separate water meter(s) installed and maintained at the contributor's expense and in a manner acceptable to the City. 
 D.    (Reference is made to Appendix A of this ordinance, which is on file in the City offices.) The minimum charge per month shall be forty-five dollars ($45.00) which includes the first one thousand (1,000) gallons of water used. In addition, each contributor shall pay a user charge for operation and maintenance, including replacement of five dollars ($5.00) per one thousand (1,000) additional gallons for the next three thousand (3,000) gallons of water used and three dollars ($3.00) per one thousand (1,000) thereafter as determined in the preceding Section. 
 E.     (Reference is made to Appendix A of this ordinance, which is on file in the City offices.) For those contributors which contribute wastewater the strength of which is greater than normal domestic sewage, a surcharge in addition to the normal user charge will be collected. The surcharge for operation and maintenance, including replacement, is:

              $0.388 per pound BOD         

              $0.287 per pound SS             

    

 F.     Any user which discharges any toxic pollutants which cause an increase in the cost of managing the effluent or the sludge from the district's treatment works, or any user which discharges any substance which singly or by interaction with other substances causes identifiable increases in the cost of operation, maintenance or replacement of the treatment works, shall pay for such increased costs. The charge to each such user shall be as determined by the responsible plant operating personnel and approved by the Board of Aldermen. 
 G.    The user charge rates established in this Chapter apply to all users of the City's treatment works, regardless of the user's location.   

Section 720.050.  Billing — When Due. [Ord. No. 87-01 Art. V §§1 — 2, 1-22-1987; Ord. No. 738 Art. V, 6-27-2000; Ord. No. 760 Art. V, 1-16-2001; Ord. No. 765 Art. V, 3-28-2001] 

A.     All users shall be billed monthly. All City bills will be calculated and mailed to or otherwise delivered to the customer on or before the fifth (5th) day of each month and are due and payable in full on or before the twentieth (20th) day of each month. 
B.     Payments not received on or before the twentieth (20th) day of such month shall be deemed delinquent and shall bear a late payment penalty equal to ten percent (10%) of the utility bill. Notice of such delinquency shall be mailed or otherwise delivered to the customer and shall inform the customer that failure to pay the utility and delinquency by 12:00 P.M. (Noon) on the last business day of the month will result in disconnection of utility service. Rendition of water and/or sewer service to such premises shall be discontinued until such bill is paid following due notice.   

Section 720.060.  City to Review User Charge System. [Ord. No. 87-01 Art. VI §§1 — 2, 1-22-1987; Ord. No. 738 Art. VI, 6-27-2000; Ord. No. 760 Art. VI, 1-16-2001; Ord. No. 765 Art. VI, 3-28-2001] 

 A.    The City shall review the user charge system annually and revise user charge rates as necessary to ensure that the system generates adequate revenues to pay the costs of operation and maintenance including replacement and that the system continues to provide for the proportional distribution of operation and maintenance including replacement costs among users and user classes. 
 B.    The City will notify each user at least annually, in conjunction with a regular bill, of the rate being charged for operation and maintenance including replacement of the treatment works.