No person shall discharge or cause to be discharged any storm water, surface water, ground water, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer.
(Ord. 601 Art. VI § 1, 1991; Ord. 997 § 1 (Exh. A), 2023)
No temporary service connections or RV dump connections shall be allowed unless granted in writing by the utility. If allowed for hardship reasons it shall only be for a documented short term and all domestic water to said connection must be metered by the City.
(Ord. 997 § 1 (Exh. A), 2023)
Storm water 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 Public Works Director. Industrial cooling water or unpolluted process waters may be discharged, on approval of the Public Works Director, to a storm sewer or natural outlet.
(Ord. 601 Art. VI § 2, 1991; Ord. 935 § 1, 2015; Ord. 997 § 1 (Exh. A), 2023)
No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
1. 
Any gasoline, grease, oils, paint, benzene, naphtha, fuel oil, or other explosive liquid, solid or gas.
2. 
Any water 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 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/l of CN in the wastes as discharged to the public sewer.
3. 
Any waters or wastes having a pH lower than 6.0 or higher than 9.0 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 at 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, underground garbage, whole blood, paunch manure, hair and fleshing, entrails, and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
(Ord. 601 Art. VI § 3, 1991; Ord. 997 § 1 (Exh. A), 2023)
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 Public Works Director 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 this opinion as to the acceptability of these wastes, the Public Works Director will give consideration to such factors as 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 treatable wastes in the sewage treatment plant, and other pertinent factors. The substances prohibited are:
1. 
Any liquid or vapor having a temperature higher than 140 degrees Fahrenheit (60 degrees centigrade).
2. 
Any water or waste containing fats, gas, 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 Fahrenheit (zero and 65 degrees centigrade).
3. 
Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (0.75 hp) or greater shall be subject to the review and approval of the Public Works Director.
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 Public Works Director 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 Public Works Director as necessary, after treatment of the composite sewage, to meet the requirements of the State, Federal, or other public agencies of jurisdiction of 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 Public Works Director in compliance with applicable State or Federal regulations.
8. 
Materials which exert or cause:
a. 
Unusual concentrations of inert suspended solids (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 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.
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 other agencies having jurisdiction over discharge to the receiving waters.
10. 
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.
11. 
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 Public Works Director.
(Ord. 601 Art. VI § 4, 1991; Ord. 738 § 1, 1997; Ord. 935 § 1, 2015; Ord. 997 § 1 (Exh. A), 2023)
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 HMC § 13.05.360, and which in the judgment of the Public Works Director may have a 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 Public Works Director may:
1. 
Reject the wastes;
2. 
Require pretreatment 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 HMC § 13.05.410. If the Public Works Director permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the requirements of all applicable codes, ordinances and laws.
(Ord. 601 Art. VI § 5, 1991; Ord. 935 § 1, 2015; Ord. 997 § 1 (Exh. A), 2023)
Grease, oil, and interceptors or traps shall be provided when, in the opinion of the Public Works Director, 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 Public Works Director and shall be located as to be readily and easily accessible for cleaning and inspection and shall be maintained by the owner, at their expense, in continuously efficient operation at all times.
(Ord. 601 Art. VI § 6, 1991; Ord. 935 § 1, 2015; Ord. 997 § 1 (Exh. A), 2023)
When required by the Public Works Director, 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 accessible and safely located and shall be constructed in accordance with plans approved by the Public Works Director. The manhole shall be installed by the owner at their expense and shall be maintained by them so as to be safe and accessible at all times.
(Ord. 601 Art. VI § 7, 1991; Ord. 935 § 1, 2015; Ord. 997 § 1 (Exh. A), 2023)
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 most recent edition of Standard Methods for the Examination of Water and Waste Water, 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 24-hour composite of all outfall 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 24-hour composites of all outfall whereas pH is determined from periodic grab samples.)
(Ord. 601 Art. VI § 8, 1991; Ord. 997 § 1 (Exh. A), 2023)
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 therefor by the industrial concern.
(Ord. 601 Art. VI § 9, 1991; Ord. 997 § 1 (Exh. A), 2023)
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 their expense. Preliminary treatment will be required before its admission into the public sewers of any waters or wastes having:
1. 
A five-day biochemical oxygen demand (BOD) greater than 300 parts per million by weight; or
2. 
Containing any quantity of substances having the characteristics described in HMC § 13.05.350; or
3. 
Containing more than 350 parts per million by weight of suspended solids; or
4. 
Having an average daily flow greater than two percent of the average daily sewage flow of the City shall be subject to the review and approval of the Public Works Director. The owner shall provide, at their expense, such preliminary treatment as may be necessary. Plans, specifications, and other pertinent information relating to the proposed preliminary treatment facilities shall be submitted for the approval of the Engineer and of the State of Oregon Department of Environmental Quality, and no construction of such facilities shall be commenced until said approvals are obtained in writing.
(Ord. 601 Art. VI § 10, 1991; Ord. 935 § 1, 2015; Ord. 997 § 1 (Exh. A), 2023)
The utility shall not be liable for damage resulting from an interruption in service. Temporary shutdowns may be resorted to by the utility for improvements and repairs. Whenever possible, and as time permits, all customers affected will be notified prior to such shutdowns. The utility will not be liable for interruption, or for any loss or damage occasioned thereby, if caused by accident, act of God, fire, strikes, riots, war or any other cause not within its control.
(Ord. 997 § 1 (Exh. A), 2023)