Waste discharge to public sewers which in turn discharge to the regional treatment plant shall meet or exceed the following criteria.
(A) 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.
(B) Storm water and all other unpolluted drainage shall be discharged to such sewers as are specifically approved by the proper town or county official. Industrial cooling water or unpolluted process waters may be discharged on approval of the official to a storm sewer or natural outlet.
(C) 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 wastewater treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the wastewater treatment plant including but not limited to cyanides in excess of two mg/l as Cn in the wastes discharged to the public sewer;
(3) Any waters or wastes having a pH lower than five and one-half, or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works; or
(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 fleshings, entrails, paper dishes, cups, milk containers and the like, either whole or ground by garbage grinders.
(D) No person shall discharge or cause to be discharged the following described materials, waters or wastes if it appears likely in the opinion of the proper Board official that such wastes can harm either the wastewater treatment process or equipment, have an adverse effect on the receiving water body, or can otherwise endanger life, limb, public property or constitute a nuisance.
(1) In forming his or her opinion as to the acceptability of these wastes, the official will give consideration of such factors as the quantities subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the wastewater treatment process, capacity of the wastewater treatment plant, degree of treatability of waste in the wastewater treatment plant, and other pertinent factors.
(2) The substances prohibited are:
(a) Any liquid having a temperature higher than 150°F (65°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°F and 150°F (0 and 65°C);
(c) Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions, whether neutralized or not;
(d) Any waters or wastes containing phenols or other taste or odor producing substances, in such concentrations exceeding limits which may be established by the Board as necessary after treatment of the composite sewage to meet the requirements of the state, federal or other public agencies of jurisdiction for such discharge to the receiving waters;
(e) Any garbage that has not been properly shredded, which shall mean the wastes from the preparation, cooking and dispensing of food that have been shredded to such degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle size greater than one-half inch of any dimension;
(f) Any water or wastes having a pH lower than 5.5 or higher than 9.5 or having any other corrosive property capable of causing damage or hazard to structure, equipment or personnel or any waste treatment works;
(g) Any waste containing toxic substances in quantities in excess of the following limits and measured at the point of discharge into the sewer system:
Copper, total | 0.5 mg/l |
Chromium, hexavalent | 0.05 mg/l |
Chromium, total | 0.1 mg/l |
Cyanides | 0.01 mg/l |
Detergents | 2.0 mg/l |
Sulfides | 0.2 mg/l |
Zinc, total | 1.0 mg/l |
or any substance that will pass through the waste treatment facilities and exceed the state and federal requirements for receiving waters. | |
(h) Under no conditions shall industrial or commercial users discharge the waste from sodium-cycle cation exchange (water softening) units;
(i) Any water or waste containing suspended solids or color of such character and quantity that unusual attention or expense is required to handle such materials at the waste treatment facilities without a special permit issued by the Board;
(j) Any water or waste with a chlorine demand greater than 15 mg/l;
(k) Any radioactive isotopes, without a special permit issued by the town;
(l) Under no conditions will the discharge of domestic, sanitary, industrial or commercial waste be permitted into the storm sewer system;
(m) Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Board in compliance with applicable state or federal regulations;
(n) Any waters or wastes having a pH in excess of (9.5);
(o) Materials which exert or cause:
1. 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);
2. Excessive discoloration (such as, but not limited to, dye, wastes and vegetable tanning solutions);
3. Unusual chemical oxygen demand, or chlorine requirement in such quantities as to constitute a significant load on the wastewater treatment works; or
4. Unusual volume of flow or concentration of wastes constituting “slugs” as defined herein.
(p) Waters or wastes containing substances which are amenable to treatment or reduction by the wastewater treatment process employed, or are amenable to treatment only to such degree that the wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters;
(q) Waters or wastes containing suspended solids in excess of 300 mg/l; and
(r) Waters or wastes with a five-day, 20°C BOD greater than 300 mg/l.
(E) (1) 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 division (D) above, and which, in the judgment of the Board, 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 official 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 fees or sewer charges.
(2) If the town permits the pretreatment or equalization of waste flows, the design and installation of the plans and equipment shall be subject to the review and approval of the town and subject to the requirements of all applicable codes, ordinances and laws. In addition, any major contributing industry as defined by 40 C.F.R. § 128.124 shall comply with 40 C.F.R. part 128 and any other regulation as shall from time to time be established by EPA or other appropriate regulating governmental agency.
(F) Grease, oil and sand interceptors shall be provided when, in the opinion of the Board, 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 Board and shall be so located as to be readily and easily accessible for cleaning and inspection.
(G) Where preliminary treatment of 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. 1-84, passed 8-23-1984) Penalty, see § 52.99