[R.O. 2013 § 705.010; Ord. No. KK235 Art. I §§ 1 — 22, 7-11-1977]
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 Celsius (20° C.), expressed in milligrams per liter.
BUILDING DRAIN
The 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.
NATURAL OUTLET
Any outlet into a watercourse, pond, ditch, lake, or other body of surface or groundwater.
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 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 one-half (1/2) 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 groundwaters 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 stormwaters 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-hour 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 Sewage Works and/or of Water Pollution Control of the City of Lawson, 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.
[R.O. 2013 § 705.020; Ord. No. KK235 Art. II § 1, 7-11-1977]
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 Lawson or in any area under the jurisdiction of said City, any human or animal excrement, garbage, or other objectionable waste.
[R.O. 2013 § 705.030; Ord. No. KK235 Art. II § 2, 7-11-1977]
It shall be unlawful to discharge to any natural outlet within the City of Lawson 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.
[R.O. 2013 § 705.040; Ord. No. KK 235 Art. II § 3, 7-11-1977]
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.
[R.O. 2013 § 705.050; Ord. No. KK235 Art. II § 4, 7-11-1977]
The owner of all houses, buildings, or properties used for human 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.
[R.O. 2013 § 705.060; Ord. No. KK235 Art. III, 7-11-1977]
A. 
Where a public sanitary or combined sewer is not available under the provisions of Section 705.050, 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 one hundred dollars ($100.00) 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 twenty-four (24) hours of the receipt of notice by the Superintendent.
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 eighty thousand (80,000) square feet (7,432.24 square meters). No septic tank or cesspool shall be permitted to discharge to any natural outlet.
E. 
At such time as a public sewer becomes available to a property served by a private sewage disposal system, as provided in Subsection (D), 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 Section shall be construed to interfere with any additional requirements that may be imposed by the Health Officer.
H. 
When a public sewer becomes available, the 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 bank run gravel or dirt.
[R.O. 2013 § 705.070; Ord. No. KK235 Art. IV, 7-11-1977]
A. 
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.
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 twenty-five dollars ($25.00) for a residential or commercial building sewer permit and fifty dollars ($50.00) for an industrial building sewer permit shall be paid to the City at the time the application is filed.
C. 
All costs and expense 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 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 Section.
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. In the absence of code provisions or in amplification thereof, the materials and procedures set forth in appropriate specifications of the ASTM and WPCF Manual of Practice No. 9 shall apply.
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, interior and 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 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 ASTM and the SPCF 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 installation 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.
[R.O. 2013 § 705.080; Ord. No. KK235 Art. V § 1, 7-11-1977]
No person shall discharge or cause to be discharged any storm water, 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.
[R.O. 2013 § 705.090; Ord. No. KK235 Art. V § 2, 7-11-1977]
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.
[R.O. 2013 § 705.100; Ord. No. KK235 Art. V § 3, 7-11-1977]
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 cyanides in excess of two (2) mg/l as CN in the wastes as discharged to the public sewer.
3. 
Any waters or wastes having a pH lower than 5.5, or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works.
4. 
Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshing, entrails and paper dishes, cups, mild containers, etc., either whole or ground by garbage grinders.
5. 
Any waters or wastes having a five-day BOD greater than three hundred (300) parts per million by weight, or containing more than three hundred fifty (350) parts per million by weight of suspended solids, or 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 reduce the biochemical oxygen demand to three hundred (300) parts per million by weight, or reduce the suspended solids to three hundred fifty (350) parts per million by weight, or 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.
[R.O. 2013 § 705.110; Ord. No. KK235 Art. V § 4, 7-11-1977]
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 Fahrenheit (150° F.), sixty-five degrees Celsius (65° C.).
2. 
Any water or waste containing fats, wax, grease, or oils, whether emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become viscous at temperatures between thirty-two and one hundred fifty degrees Fahrenheit (32° and 150° F.) [zero and sixty-five degrees Celsius (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 (3/4) horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the Superintendent.
4. 
Any waters of 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 of 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.
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 of 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.
10. 
Waters or wastes contains 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.
[R.O. 2013 § 705.120; Ord. No. KK235 Art. V § 5, 7-11-1977]
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 705.110 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 to 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
4. 
Require payment to cover the added cost of handling and treating the wastes not covered by existing taxes or sewer charges under the provisions of Section 705.170 of this Chapter.
B. 
If the Superintendent permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the Superintendent, and subject to the requirements of all applicable codes, ordinances and laws.
[R.O. 2013 § 705.130; Ord. No. KK235 Art. V § 6, 7-11-1977]
Grease, oil, and sand interceptors shall be provided when, in the opinion of the Superintendent, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand, or other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the Superintendent, and shall be located as to be readily and easily accessible for cleaning and inspection.
[R.O. 2013 § 705.140; Ord. No. KK235 Art. V § 7, 7-11-1977]
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/her expense.
[R.O. 2013 § 705.150; Ord. No. KK235 Art. V § 8, 7-11-1977]
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/her expense, and shall be maintained by him/her so as to be safe and accessible at all times.
[R.O. 2013 § 705.160; Ord. No. KK235 Art. V § 9, 7-11-1977]
All measurements, tests, and analyses of the characteristics of waters and wastes to which reference is made in this Chapter 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 said control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb, and property. (The particular analyses involved will determine whether a twenty-four-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 analyses are obtained from twenty-four-hour composites of all outfalls whereas pH's are determined from periodic grab samples.)
[R.O. 2013 § 705.170; Ord. No. KK235 Art. V § 10, 7-11-1977]
No statement contained in this Chapter shall be construed as preventing any special agreement or arrangement between the City and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the City for treatment, subject to payment therefor, by the industrial concern.
[R.O. 2013 § 705.180; Ord. No. KK235 Art. VI, 7-11-1977]
No unauthorized person shall maliciously, willfully, or negligently break, damage, destroy, uncover, deface, or tamper with any structure, appurtenance, or equipment which is part of the sewage works. Any person violating this Section shall be subject to immediate arrest under charge of disorderly conduct.
[R.O. 2013 § 705.190; Ord. No. KK235 Art. VII, 7-11-1977]
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 Chapter. The Superintendent or his/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 Subsection (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 Section 705.150.
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 said easement. All entry and subsequent work, if any, on said easement, shall be done in full accordance with the terms of the duly negotiated easement pertaining to the private property involved.
[R.O. 2013 § 705.200; Ord. No. KK235 Art. VIII, 7-11-1977]
A. 
Any person found to be violating any provision of this Chapter except Section 705.180 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 Subsection (A), shall be guilty of an ordinance violation, and on conviction thereof shall be fined and/or imprisoned as set out in Section 100.220 of this Code. Each twenty-four-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 Chapter shall become liable to the City for any expense, loss, or damage occasioned the City by reason of such violation.
[R.O. 2013 § 705.210; Ord. No. KK232 §§ 1 — 5, 4-25-1977; Ord. No. 08-2-07 § 1, 2-19-2008]
A. 
Usage. All persons, households, business firms and industrial outlets within the City of Lawson, Missouri, that have access to the Brushy Creek sewer system of Lawson must use the sewer system provided and be governed by later provisions in this Section.
B. 
Usage Outside The City Of Lawson, Missouri. All persons, households, business firms and industrial outlets outside the City limits of Lawson, Missouri, will have the right to hook up and use the Lawson Sewer System provided these potential users can make a hookup to the sewer system and be governed by the same rules and regulations as those within the City of Lawson.
Furthermore, these potential users outside the City of Lawson must get approval for hookup by the Missouri Department of Natural Resources or other State agency that may have authority for such approval.
C. 
Industrial Users. All industrial or other users that have a discharge of sewage into the Lawson sewer system and have an effluent discharge greater than the normal household must have a treating system for the sewage to bring the effluent discharge down to and not to exceed that of the normal household.
Furthermore, the users as specified in this Section must furnish an outlet for testing and furnish samples of discharge for testing by the City of Lawson and the State of Missouri.
D. 
Charges For Use.
[Ord. No. 4-3-14 § 1, 4-21-2014]
1. 
The City of Lawson will review the rates for sewer system user charges at least every year and may revise such rates as necessary to ensure that the system generates adequate revenue to pay the costs of operation and maintenance, including replacement of the system's components, and that operation of the system continues to provide adequate revenues for the proportional distribution of operation, maintenance, and replacement costs among users and user classes.
2. 
Waiver. As determined solely by the City Administrator, or his/her designee, after inspection of the property, the City of Lawson may waive a portion of sewer use charges which can be attributed only to unintentional water loss due to a water line break. The amount of any waiver permitted shall be determined using the following factors:
a. 
The water line break occurred between the water meter and the outside wall of the structure being provided water service by the broken water line.
b. 
Water from the leak in fact did not flow into the sanitary sewer system.
c. 
Any waiver of sewer charges shall be based on charges billed to sewer user for the three (3) months immediately preceding the unintentional water loss to determine the average sewer use charge over that period of time. The waiver amount shall be determined by subtracting the average sewer use amount from the actual sewer use amount measured during the billing cycle in which the unintentional water loss occurred.
E. 
Rate Schedule For Sewer Use.
1. 
The following rates shall apply to all customers discharging sewage and/or polluted wastes into the City's sewer system and receiving metered water from the City water system.
a. 
A minimum charge of four dollars twenty-five cents ($4.25) per month.
[Ord. No. 06-3-12 § 1, 6-27-2012]
b. 
Four dollars and twenty cents ($4.20) per one thousand (1,000) gallons or fraction thereof of water used per month.
[Ord. No. 06-3-12 § 1, 6-27-2012; Ord. No. 10-2-13 § 1, 10-21-2013; Ord. No. 9-2-15 § 1, 9-28-2015]
2. 
The following rate shall apply to all customers discharging sewage and/or polluted waste into the City's sewage system and are not connected to the City water system.
a. 
Monthly billing shall be made at applicable service rates as established in Subsection (E)(1) above based on metered usage of the private water supply.
[R.O. 2013 § 705.220; Ord. No. KK707 §§ 1 — 6, 10-16-2000]
A. 
The Building Inspector and other duly authorized employees of the City of Lawson, Missouri, bearing proper credentials and identification shall be permitted to enter upon all properties for the purposes of inspection, observation, measurements, sampling and testing in accordance with the provisions of this Section.
B. 
All new public sewer users shall have their building sewer so constructed as to prevent backflow from mains (public sewers) and the City of Lawson, Missouri, shall not be liable for any damages or alleged damages resulting from failure of the user to have backwater valves installed or for the improper operation of such valve.
C. 
All existing sewer users within the City of Lawson, Missouri, shall have their building sewer so constructed or reconstructed as to prevent backflow from mains (public sewers) and the City of Lawson, Missouri, shall not be liable for any damages or alleged damages resulting from failure of the user to have backwater valves installed or for the improper operation of such valve.
D. 
Any person found to be violating any provision of this Section shall be served by the City of Lawson, Missouri, with written notice stating the nature of the violation and providing a reasonable time limit for the satisfactory correction thereof. The offender shall, with the period of time cited in such notice, permanently cease all violations.
E. 
Any person who shall continue any violation beyond the time limit provided for shall be guilty of an ordinance violation and upon conviction thereof shall be fined in an amount not exceeding five hundred dollars ($500.00) or imprisonment in jail for a period not to exceed ninety (90) days for each violation, or both such fine and imprisonment. Each day in which any such violation shall continue shall be deemed a separate offense.
F. 
Any person violating any of the provisions of this Chapter shall become liable to the City of Lawson, Missouri, for any expense, loss or damage occasioned the City by reason of such violation.