Chapter 15 · Utilities

Article 4. Sewers

Sections 15-401 to 15-438 · 38 sections

15-401 Definitions.

Unless the context clearly indicates otherwise, the meaning of words and terms as used in this article shall be as follows:

(a)B.O.D. (denoting Biochemical Oxygen Demand) — shall mean the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20 degrees centigrade, expressed in parts per million by weight.

(b)Building Drain — shall mean 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 feet outside the inner face of the building wall.

(c)Building Sewer — shall mean the extension from the building drain to the public sewer or other place of disposal.

(d)Combined Sewer — shall mean a sewer receiving both surface runoff and sewage.

(e)Garbage — shall mean the solid wastes from the domestic and commercial preparation, cooking and dispensing of food and from the handling, storage and sale of produce.

(f)Individual Domestic — means any single family residence, commercial business, office, institution, school, church or public entity having an individual direct or indirect connection to the wastewater facilities of the city and on individual city or private water service meter, or connection to any such water service.

(g)Industrial — means any industrial business engaged in the manufacturing or processing of one or more products, and in which wastewaters are produced from such manufacturing or processing and said wastewaters are discharged directly or indirectly to the wastewater facilities of the city.

(h)Industrial Wastes — shall mean the liquid wastes from industrial manufacturing processes, trade, or business as distinct from sanitary sewage.

(i)Multi-domestic — means any multi-family residence, apartment or mobile home and any commercial business, office, institution, school, church or public entity having a direct or indirect connection to the wastewater facilities of the city and not having an individual water service meter but is served with city or private metered water by the owner of the property on which it is located.

(j)Natural Outlet — shall mean any outlet into a watercourse, pond, ditch, lake, or other body of surface or groundwater.

(k)Normal wastewater. The strength of normal wastewater shall be considered within the following ranges:

(1)A five day biochemical oxygen demand of 300 milligrams per liter or less;

(2)A suspended solid concentration of 350 milligrams or less;

(3)Hydrogen ion concentration of 5.0 to 9.0.

(l)Person — shall mean any individual, firm, company, association, society, corporation, or group.

(m)pH — shall mean the logarithm of the reciprocal of the weight of hydrogen ions in grams per liter of solution.

(n)Properly Shredded Garbage — shall mean the wastes from the preparation, cooking, and dispensing of food that have 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 1/2 inch (1.27 centimeters) in any dimension.

(o)Public Sewer — shall mean a sewer in which all owners of abutting properties have equal rights, and is controlled by public authority.

(p)Sanitary Sewer — shall mean a sewer which carries sewage and to which storm, surface, and groundwaters are not intentionally admitted.

(q)Sewage — shall mean 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.

(r)Sewage Treatment Plant — shall mean any arrangement of devices and structures used for treating sewage.

(s)Sewage Works — shall mean all facilities for collection, pumping, treating and disposing of sewage.

(t)Sewer — shall mean a pipe or conduit for carrying sewage.

(u)Slug — shall mean 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 15 minutes more than five times the average 24 hour concentration or flows during normal operation.

(v)Storm Sewer or Storm Drain — shall mean a sewer which carries storm and surface waters and drainage, but excludes sewage and polluted industrial wastes.

(w)Superintendent — shall mean the (superintendent of sewage works and/or of water pollution control) of the city of Potwin, Kansas, or his or her authorized deputy, agent, or representative.

(x)Suspended Solids — shall mean 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.

(y)User — means any person as defined in section 1-102, including an institution, governmental agency or political subdivision producing wastewater requiring processing and treatment to remove pollutants and having premises connected to the wastewater facilities.

(z)Wastewater — means sewage, the combination of liquids and water carried wastes from residences, commercial and industrial buildings, institutions, governmental agencies, together with any ground, surface or storm water that may be present.

(aa)Watercourse — shall mean a channel in which a flow of water occurs, either continuously or intermittently.

(Code 1990)

15-402 Disposal of sewage.

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, or in any area under the jurisdiction of the city, any human or animal excrement, garbage, or other objectionable waste.

(Ord. 543, Art. II, Sec. 1; Code 1990)

15-403 Natural outlet.

It shall be unlawful to discharge to any natural outlet within the city, any sewage or other polluted waters, except where suitable treatment has been provided in accordance with subsequent provisions of this article.

(Ord. 543, Art. II, Sec. 2; Code 1990)

15-404 Privy unlawful.

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.

(Ord. 543, Art. II, Sec. 3; Code 1990)

15-405 Sewer connection required.

The owner of all houses, buildings, or properties used for human occupancy, employment, recreation, or other purpose, situated within the city on any street, alley, or right-of-way in which areas are now located or may in the future be located a public sanitary sewer of the city, is hereby required at his or her expense to install a suitable toilet facility therein, and to connect such facility directly with the proper public sewer in accordance with the provisions of this article, within 90 days after date of official notice to do so, provided such public sewer is within 100 feet of the property line.

(Ord. 543, Art. II, Sec. 4; Code 1990)

15-406 Private sewer system.

Where a public sanitary or combined sewer is not available under the provisions of section 15-405, the building sewer shall be connected to a private sewage disposal system complying with the provisions of this article.

(Ord. 543, Art. Ill, Sec. 1; Code 1990)

15-407 Same; permit.

Before commencement of construction of private sewage disposal system, the owner shall first obtain a written permission 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 deemed necessary by the superintendent. A permit and inspection fee of $50 shall be paid to the city treasurer at the time the application is filed.

(Ord. 543, Art. 111, Sec. 2; Code 1990)

15-408 Same; inspector.

A permit for a private sewage disposal system shall not become effective until the installation is completed to the satisfaction o the superintendent. He or she shall be allowed to inspect the work in any state of construction. 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. Inspection shall be made within 48 hours of the receipt of notice by the superintendent.

(Ord. 543, Art. Ill, Sec. 3; Code 1990)

15-409 Same; connection to city system; when.

At such time as a public sewer becomes available to a property served by a private sewage disposal system, as provided in section 15-405, a direct connection shall be made within 60 days to the public sewer in compliance with this article, and any septic tanks, cesspools, and similar private sewage disposal facilities shall be abandoned and filled with suitable material.

(Ord. 543, Art. Ill, Sec. 5; Code 1990)

15-410 Permit; connection fee.

No unauthorized person shall uncover, make any connections with or opening into, use, alter, or disturb any public sewer or appurtenance thereof without first obtaining a written permit from the superintendent.

(Ord. 543, Art. IV, Sec. 1; Code 1990)

15-411 Classes of permits.

There shall be two classes of building sewer permits:

(a)For the residential and commercial services, and

(b)For the service to establish and produce an industrial waste.

In either case, the owner or his or her agent shall make application on a special form furnished by the city. Permit application shall be supplemented by any plans, specifications, or other information considered pertinent in the judgment of the superintendent. A permit inspection fee of $50 for residential and commercial building sewer permit and $100 for industrial building sewer permit. It shall be paid to the city treasurer at the time application is filed.

(Ord. 543, Art. IV, Sec. 2; Code 1990)

15-412 Costs.

All costs and expense incident to the installation and connection of the building sewer shall be paid 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.

(Ord. 543, Art. IV, Sec. 3; Code 1990)

15-413 Sewer for each building.

A separate and independent building sewer shall be provided for every building; except where one building stands at the rear of another on an interior lot and no private sewer is available or can be feasibly 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 building sewer.

(Ord. 543, Art. IV, Sec. 4; Code 1990)

15-414 Same; old building sewers.

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 article.

(Ord. 543, Art. IV, Sec. 5; Code 1990)

15-415 Same; specifications.

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. In the absence of code provisions or in amplification thereof, the materials and procedures set forth in appropriate specification of the A.S.T.M. and W.P.C.F. Manual of Practice No. 9 shall apply.

(Ord. 543, Art. IV, Sec. 6; Code 1990)

15-416 Same specifications.

Whenever possible, the building sewer shall be brought to the building at an elevation below the basement floor. IN all 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.

(Ord. 543, Art. IV, Sec. 7; Code 1990)

15-417 Same; specifications.

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 gas tight and watertight. Any deviation from the prescribed procedures and materials must be approved by the superintendent before installation.

(Ord. 543, Art. IV, Sec. 9; Code 1990)

15-418 Same; specifications.

In all buildings in which any building drain is too low to permit gravity flow to the public sewer, sanitary sewage carried by such drain shall be lifted by approved artificial means and discharged into the building sewer. The use of any pumping equipment, for which cross connections of a public water supply system are needed, is prohibited.

(Ord. 543, Art. IV, Sec. 9; Code 1990)

15-419 Same; specifications.

All excavation required for the installation of a building sewer shall be open trench work unless otherwise approved by the superintendent. Pipe laying and backfill shall be performed in accordance with ASTM specifications (c12-19) except that no backfill shall be placed until the work has been inspected.

(Ord. 543, Art. IV, Sec. 10; Code 1990)

15-420 Sewer connections.

The connection of a building sewer into the public sewer shall be made at the “Y” branch, if such branch is available at a suitable location. If the public sewer is 12 inches in diameter or less, and no properly located “Y” branch is available, the owner shall at his or her expense install a “Y” branch in the public sewer location specified by the superintendent. When the public sewer is greater than 12 inches in diameter and no properly located “Y” branch is available, a neat hole may be cut in the public sewer to receive the building sewer with entry in the downstream direction at an angle of about 45 degrees. A 45 degree elbow may be used to make such connections with the spigot end cut so as not to extend past the inner surface of the public sewer. The invert of the building sewer at the point of the connection shall be at the same or a higher elevation as the invert of the public sewer. The smooth, neat joints shall be made, and the connection be made secure and water tight by encasement in concrete. Special fittings may be used for the connection only when approved by the superintendent.

(Ord. 543, Art. IV, Sec. 11; Code 1990)

15-421 Same; notification for inspection.

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 or her representative.

(Ord. 543, Art. IV, Sec. 10; Code 1990)

15-422 Same; excavations.

All excavations for public sewer installations hall be adequately guarded with barricades and lights as to protect the public from hazards. Streets, sidewalks, parkways and other public property disturbed in the course of work shall be restored in a manner satisfactory to the city.

(Ord. 543, Art. IV, Sec. 11; Code 1990)

15-423 Roof, foundation drains.

No person shall make connections of roof downspouts, exterior foundation drains, areaway drains or other sources of surface runoff or groundwater to a building sewer or building drain which in turn is connected directly or indirectly to public sanitary sewer.

(Ord. 543, Art. IV, Sec. 8; Code 1990)

15-424 Stormwater; etc. discharge.

(a)No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, including interior and exterior foundation drains, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer.

(b)Storm water and all other unpolluted drainage shall be discharged to storm sewers, or to a natural outlet approved by the superintendent. Industrial cooling water or unpolluted process water may be discharged by approval of the superintendent to a storm sewer, combined sewer or natural outlet.

(Ord. 543, Art. V, Secs. 1:2; Code 1990)

15-425 Prohibited discharges.

No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:

(a)Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas;

(b)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 mg/1 as CN in the wastes as discharged to the public sewer.

(c)Any waters or wastes having a pH lower than 5.5, or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works.

(d)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, milk containers, etc. either whole or ground by garbage grinders.

(Ord. 543, Art. V, Sec. 3; Code 1990)

15-426 Same; determination by superintendent.

No person shall discharge or cause to be discharged the following desired substances, material, 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 street, or can otherwise endanger life, limb, public property, or constitute a nuisance. In forming his or 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:

(a)Any liquid or vapor having a temperature higher than 150 degrees F (65 degrees C).

(b)Any water or waste containing fats, wax, grease, or oils, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32 and 150 degrees F (0 and 65 degrees C).

(c)Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of 3/45 horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the superintendent.

(d)Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions whether neutralized or not.

(e)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.

(f)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 of jurisdiction for such discharge to the receiving waters.

(g)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.

(h)Any waters or wastes having a pH in excess of (9.5).

(i)Materials which exert or cause:

(1)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).

(2)Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions).

(3)Unusual BOD, chemical oxygen demand, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works.

(4)Unusual volume of flow or concentration of wastes constituting “slugs” as defined herein:

(j)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.

(k)Any waters or wastes having (1) a five-day BOD greater than 300 parts per million by weight, or (2) containing more than 350 parts per million by weight of suspended solids, or (3) having an average daily flow greater than two percent 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 or her expense, such preliminary treatment as may be necessary to (1) reduce the biochemical oxygen demand to 300 parts per million by weight, or (2) reduce the suspended solids to 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 the approvals are obtained in writing.

(Ord. 543, Art. V, Sec. 4; Code 1990)

15-427 Same; superintendent options.

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 15-426 of this article, and which in the judgement 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:

(a)Reject the wastes;

(b)Require pretreatment to an acceptable condition for discharge to the public sewers;

(c)Require control over the quantities and rates of discharge; and/or

(d)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 15-432 of this article. If the superintendent permits the pretreatment to 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. 543, Art. V, Sec. 5; Code 1990)

15-428 Grease, oil and sand interceptors.

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 hat such interceptors shall to be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the superintendent, and shall be located as to be readily and easily accessible for cleaning and inspection.

(Ord. 543, Art. V, Sec. 6; Code 1990)

15-429 Treatment and flow facilities.

Where preliminary treatment or flow equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his or her expense.

(Ord. 543, Art. V, Sec. 7; Code 1990)

15-430 Control manhole.

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 accessibly 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 or her expense, and shall be maintained by him or her so as to be safe and accessible at all times.

(Ord. 543, Art. V, Sec. 8; Code 1990)

15-431 Measurements and tests.

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 by the American Public Health Association, and shall be determined at the control manhole provided, or upon suitable samples taken at the 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 24 hour composite of all outfalls of a premises is appropriate or whether a grab sample or samples should be taken. Normally, but not always, BOD and suspended solids and analyses are obtained from 24 hour composites of all outfalls whereas ‘H’s are determined from periodic grab samples.)

(Ord. 543, Art. V, Sec. 9; Code 1990)

15-432 Special agreements.

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.

(Ord. 543, Art. V, Sec. 10; Code 1990)

15-433 Damage to sewers.

No unauthorized person shall maliciously, willfully, or negligently break damage, destroy, uncover, deface, or tamper with any structure, appurtenance, or equipment which is a part of the sewage works. Any person violating this provision shall be subject to immediately arrest under charge of disorderly conduct.

(Ord. 543, Art. VI, Sec. 1; Code 1990)

15-434 Entrance for inspections allowed.

(a)The superintendent and other duly authorized employees of the city bearing proper credentials and identification shall be permitted to enter all properties for the purposes of inspection, observation, measurement, sampling, and testing in accordance with the provisions of this article. The superintendent or his or her representatives shall have no authority to inquire into any processes including metallurgical, chemical, oil, refining, ceramic, paper, or other industries beyond that point having a direct bearing on the kind and source of discharge to the sewers or waterways or facilities for waste treatment.

(b)While performing the necessary work on private properties referred to in (a) above, the superintendent or duly authorized employees of the city shall observe all safety rules applicable to the premises established by the company and the company shall be held harmless for injury or death to the city employees and the city shall indemnify the company against loss or damage to its property by city employees and against liability claims and demands for personal injury or property damage asserted against the company and growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the company to maintain safe conditions as required in section 15-430.

(c)The superintendent and other duly authorized employees of the city bearing proper credentials and identification shall be permitted to enter all private properties through which the city holds a duly negotiated easement for the purposes of, but not limited to, inspection, observation, measurement, sampling, repair, and maintenance of any portion of the sewage works lying within the easement. All entry and subsequent work, if any, on the easement, shall be done in full accordance with the terms of the duly negotiated easement pertaining to the private property involved.

(Ord. 543, Art. VII, Secs. 1:3; Code 1990)

15-435 Violations; penalties.

(a)Any person found to be violating any provision of this article except section 15-433 shall be served by the city with written notice stating the nature of the violation and providing a reasonable time limit for the satisfactory correction thereof. The offender shall, within the period of time stated in such notice, permanently cease all violations.

(b)Any person who shall continue any violation beyond the time limit provided for in (a) above, shall be guilty of a violation, and on conviction thereof shall b fiend n the amount not exceeding $100 for each violation. Each 24-hour period in which any such violation shall continue shall be deemed a separate offense.

(c)Any person violating any of the provisions of this article shall become liable to the city for any expense, loss, or damage occasioned the city by reason of such violation.

(Ord. 543, Art. VIII, Secs. 1:3; Code 1990)

15-436 Private sewer systems; type, capacities, locations, etc.

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 Kansas. 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 20,000 sq. ft. (1857.88 square meters). No septic tank or cesspool shall be permitted to discharge to any nature outlet.

(Ord. 543, Art. Ill, Sec. 4; Code 1990)

15-437 Same; operate, additional requirements, connection to city system.

The owner shall operate and maintain the private sewage disposal facilities in a sanitary manner at all times, at no expense to the city. No statement contained in this article shall be construed to interfere with any additional requirements that may be imposed by the health officer. When a public sewer becomes available, the building sewer shall be connected to the sewer within 60 days and the private sewage disposal system shall be cleaned of sludge and filled with clean bankrun gravel or dirt.

(Ord. 543, Art. Ill, Secs. 6:8; Code 1990)

15-438 Rates.

(a)The following classes of users and charges to those users are hereby established:

Class I Residential Users: Single contributors shall pay $22.00 per month.

Class II Commercial: Any commercial establishment which contributes less than 15,000 gallons per month and residential users outside the Potwin city limits shall pay $27.00 per month.

Class III Heavy Commercial & Schools: Commercial establishments which contribute more than 15,000 gallons per month and schools shall pay $87.00 per month.

(b)Any user which discharges any toxic pollutants which cause an increase in the cost of managing the effluent or the sludge from the city’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 will be as determined by and approved by the city council.

(Ord. 577; Code 1990; Ord. 694; Ord. 721)