Hallsville Use of Public Sewers ordinance (§ 710.050)

A. No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters into any sanitary sewer. Any connection, drain or arrangement which will permit any such waters to enter any sanitary sewer shall be deemed to be a violation of this Section and this Chapter.

B. It shall be unlawful for any person constructing a sewer or house or building connection or an industrial connection to a sanitary sewer to leave such connection open, unsealed or incomplete in such a manner that will permit storm or surface water to enter into any sanitary sewer within the City. All such openings shall be tightly sealed at all points whenever work is not in progress on such sewer or connection.

C. Stormwater and all other unpolluted drainage shall be discharged into such sewers as are specifically designated as storm sewers or to a drainage channel or natural outlet approved by the Superintendent. Industrial cooling water or unpolluted process water may be discharged, on approval of the Superintendent, to a storm sewer, drainage channel or natural outlet.

D. No person shall deposit or throw into any sewer, sewer inlet or private drain connecting to a public sewer any ashes, cinders, sand, mud, straw, hay, shavings, tinners' scraps, waste, produce or material of manufacture, rags or garbage which has not been properly shredded or any substance which may cause an obstruction or cause a nuisance. No dam or other obstruction shall be placed in any sewers unless permission to do so is expressly granted by the Superintendent.

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

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) milligrams per liter as CN in the wastes discharged to the public sewer.

3. Any waters or waste having a pH lower than five point five (5.5) or having any other corrosive property capable of causing damage or hazard to structure, equipment and personnel of the sewerage works.

4. Solids 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, lime slurry, lime residues, chemical residues, paint residues and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.

F. No person shall discharge or cause to be discharged to the public sewers the following described substances, materials, waters or wastes, if in the opinion of the Superintendent, such wastes can harm the sewer, sewage treatment process or equipment, have 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 lows and velocities in the sewers, materials of construction of the sewers, nature of the sewage treatment process, capacity of the sewers, nature of the sewage treatment process, capacity of the sewage treatment plant and other pertinent factors. Prohibited substances 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) milligrams per liter or containing substances which may solidify or become discernibly 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-quarter (3/4) horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the Superintendent.

4. Any waters or wastes containing acid iron pickling wastes or concentrated plating solutions, whether neutralized or not.

5. Any noxious or malodorous substance which can form a gas, which either singly or by interaction with other wastes is capable of causing objectionable odors; or hazard to life or form

solids in concentrations exceeding limits established herein; or creates any other condition deleterious to structures, treatment processes or equipment; or requires unusual provisions, attention or expense to handle such materials.

6. Any water or waste containing fats, wax, grease or oil, from animal or vegetable sources, whether emulsified or not, in excess of one hundred (100) mg/l or containing substances which may solidify or become discernibly viscous at temperatures between thirty-two degrees Fahrenheit (32° F.) and one hundred fifty degrees Fahrenheit (150° F.). Any water or waste containing fats, wax, grease or oil, of mineral origin or from petroleum sources, whether emulsified or not, in excess of twenty (20) mg/l or containing substances which may solidify or become discernibly viscous at temperatures between thirty-two degrees Fahrenheit (32° F.) and one hundred fifty degrees Fahrenheit (150° F.).

7. Unusual biochemical oxygen demand in excess of three hundred (300) parts per million and chemical oxygen demand in excess of four hundred fifty (450) parts per million that will constitute a significant load on the sewage treatment works.

8. Any waters or wastes having a pH in excess of ten point five (10.5).

9. 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 the State, Federal or other agencies having jurisdiction over discharge to receiving waters.

G. Except in quantities or concentrations or with provisions as stipulated herein, it shall be unlawful for any person to discharge or cause to be discharged waters or wastes to the public sewers containing:

1. Free or emulsified oil and grease exceeding on analysis an average of one hundred (100) parts per million (eight hundred thirty-three pounds per million gallons) of either or both or combinations thereof, if in the opinion of the Superintendent it appears probable that such wastes can deposit grease or oil in the sewer lines in such a manner as to produce clogging or can have deleterious effects on the treatment process due to the excessive quantities.

2. Salts of heavy metals in solution or suspension in concentrations exceeding the following, or similar objectionable or toxic substances or wastes exerting excessive chlorine requirement to such a 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:

3. Cyanides or cyanogen compounds capable of liberating hydrocyanic gas on acidification in excess of two (2) parts per million by weight as CN in the wastes from any outlet into the public sewers.

4. Materials which would exert or cause:

a. Unusual concentration of inert suspended solid (such as, but not limited to, Fuller's earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate).

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

c. Unusual biochemical oxygen demand, chemical oxygen demand or chlorine demand in excess of thirty (30) parts per million that will constitute a significant load on the sewage treatment works.

d. High hydrogen sulfide content.

H. Pretreatment Required.

1. Unusual volume of low or concentration of wastes constituting "slugs," as deemed herein, shall be pretreated to a concentration acceptable to the City if such wastes can:

a. Cause damage to collection facilities;

b. Impair the process;

c. Incur treatment cost exceeding those of normal sewage; or

d. Render the water unit for stream disposal or industrial use.

2. Where discharge of such wastes to a public sewer is not properly pretreated or otherwise corrected, the Superintendent may:

a. Reject the wastes or terminate the sewer service; or

b. Require control of the quantities and rates of the discharge of such wastes.

3. 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 subject to the requirements of all applicable codes, ordinances and laws.