13.10.100 Use of the public sewers.
(1) No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water or unpolluted industrial process water to any sanitary sewer.
(2) Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers or to a natural outlet approved by the superintendent. Industrial cooling water or unpolluted process water may be discharged, upon approval of the superintendent, to a storm sewer or natural outlet.
(3) Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described water or wastes to any public sewer:
(a) Any liquid or vapor having a temperature higher than one hundred fifty (150) degrees Celsius.
(b) Any gasoline, grease, oils, paint, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
(c) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, wax, plastics, wood, paunch manure or any other solid or viscous substance capable of causing obstructions to the flow in sewers or other interference with the proper operation of the sewer works.
(d) Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals or create any hazard in the receiving waters of the sewage treatment plant.
(e) Any waters or wastes having a pH lower than 6.0 or higher than 9.0 or having any corrosive property capable of causing damage to structures, equipment and personnel of the sewage works.
(f) Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such material at the sewage treatment plant.
(g) Any noxious or malodorous gas or substance capable of creating a public nuisance, including the contents of septic tanks and cesspools, without written consent of the superintendent.
(4) 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 amount, or any flammable wastes, sand and other harmful ingredients, except that such interceptors shall not be required for private living quarters. All interceptors shall be of a type and capacity approved by the superintendent and shall be located so as to be readily and easily accessible for cleaning and inspection, and shall be maintained by the owner, at his expense, in continuously efficient operation at all times.
(5) The admission into the public sewers of any waters or wastes having (a) a “BOD” demand greater than three hundred (300) milligrams per liter or (b) containing more than three hundred fifty (350) milligrams per liter of suspended solids, or (c) having an average daily flow greater than two percent (2%) of the system’s average daily sewage flow shall be subject to the review and approval of the Superintendent. Where necessary in the opinion of the Superintendent, the owner shall provide, at his expense, such preliminary treatment as may be necessary. Plans, specifications and any other pertinent information relating to the proposed preliminary treatment facilities shall be submitted for the approval of the Superintendent and of the Department of Environmental Quality, and no construction of such facilities shall be commenced until said approvals are obtained in writing.
(6) When required by the Superintendent, the owner of any property served by a building sewer carrying industrial wastes shall install a suitable control structure in the building sewer to facilitate observation, sampling and measurement of the wastes. Said structure shall be accessibly and safely locked, and shall be constructed in accordance with plans approved by the Superintendent. The structure shall be installed by the owner at his expense, and shall be maintained by him so as to be safe and accessible at all times.
(7) Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation, by the owner at his expense.
(8) All measurements, tests and analysis of the characteristics of waters and wastes of which reference is made above shall be determined in accordance with the latest edition of “Standard Methods for the Examination of Water and Sewage,” published by the American Public Health Association, and shall be determined at the control structure. In the event that no special manhole has been required, the control structure shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected.
(9) No statement contained in this article shall be construed as preventing any special agreement or arrangement between Clark County and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the county for treatment subject to payment therefor by the industrial concern. (Section 13.10.100, Ord. No. 1976-05-20, (part), 1976)