(A)   No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with the operation or performance of the Publicly Owned Treatment Works (POTW). These general prohibitions apply to all such users of the POTW whether or not the user is subject to the National Categorical Pretreatment Standards or any other federal, state, or local pretreatment standards or requirements.
   (B)   No user shall introduce or cause to be contributed, the following substances to the POTW:
      (1)   Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient either alone or by interaction with other substances to cause fire or explosion or be injurious in any other way to the POTW or to the operation of the POTW. At no time shall two successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system) be more than five percent (5%) or any single reading over ten percent (10%) of the Lower Explosive Limit (LEL) of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, sulfides and any other substances which the city, the state, or the EPA has notified the user is a fire hazard to the system.
      (2)   Wastewater containing constituents in concentrations which are in excess of the following concentrations found in domestic wastes:
         BOD5                     10,000 mg/1
         TSS                     10,000 mg/l
         TKN                     200 mg/l
         Phosphorous (P)               57 mg/l
         Biodegradable oil and grease            75 mg/l
         COD                     15,000 mg/l
         TDS                     2,000 mg/l
         Chlorides                  400 mg/l
      (3)   Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities such as, but not limited to, grease, garbage with particles greater than one-half inch (1/2") in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, used birth control and feminine hygiene products, wastepaper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, and glass grinding or polishing wastes.
      (4)   Any wastewater having a pH less than 5.5 or higher than 11.0, or any wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment, and/or personnel of the POTW.
      (5)   Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the POTW, or exceed the limitations set forth in the National Categorical Pretreatment Standards. A toxic pollutant shall include, but not be limited to, any pollutant identified pursuant to § 307(a) of the Clean Water Act, being 33 U.S.C. 1317(a), as amended from time to time. The maximum limits for the below listed substances are:
   Substance               mg/l
   Arsenic               0.600
   Chromium, total            13.0
   Copper                  Level of internal water supply
   Iron                  2.1
   Lead                  0.50
   Mercury               0.002
   Molybdenum               0.20
   Selenium               0.74
   Silver                  0.45
   Surfactants (MBAS)            27.0
   Zinc                  2.000
      (6)   Any noxious or malodorous liquids, gases, or solids which either singly or by interaction with other wastes are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewers for maintenance and repair.
      (7)   Any substance which may cause the POTW's effluent or any other product of the POTW such as residues, sludges, or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case, shall a substance discharged to the POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under § 405 of the Clean Water Act, as amended from time to time, any criteria, guidelines, or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, being 42 U.S.C. 6901 et seq., the Clean Air Act, being 42 U.S.C. 1251 et seq., the Toxic Substances Control Act, being 15 U.S.C. 2601 et seq., or state criteria applicable to the sludge management method being used.
      (8)   Any substance which will cause the POTW to violate its state operating permit(s) or the receiving water quality standards.
      (9)   Any wastewater with objectionable color not removed in the treatment process, such as but not limited to, dye wastes and vegetable tanning solutions.
      (10)   Any wastewater having a temperature which will inhibit biological activity in the POTW resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW which exceeds 40°C (104°F).
      (11)   Any pollutants released at a flow rate and/or pollutant concentration which a user knows or has reason to know will cause interference in the POTW. In no case shall a slug load have a flow rate or contain concentration or quantities of pollutants that exceed five times the average 24 hour concentration, quantities, or flow rate during normal operation for any time period longer than 15 minutes.
      (12)   Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration as may exceed the limits established in the applicable state or federal regulations.
      (13)   Any liquid or vapor having a temperature higher than 150° Fahrenheit (65° Celsius).
      (14)   Wastewater containing more than five mg/l of petroleum oil, nonbiodegradable cutting oils or products of mineral oil origin.
      (15)   Any garbage that has not properly been shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (0.76 hp metric) or greater shall be subject to the review and approval of the director.
      (16)   Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions, whether neutralized or not.
      (17)   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 director for such materials.
      (18)   Any waters or wastes containing phenols or other taste or odor-producing substances, in such concentrations exceeding limits which may be established by the director as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal, or other public agencies having jurisdiction over such discharge to the receiving waters.
      (19)   Materials which exert or cause unusual volumes of flow or concentration of wastes constituting slugs.
      (20)   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 wastewater treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
      (21)   Any wastewater which causes a hazard to human life or creates a public nuisance.
      (22)   Trucked or hauled pollutants, except at discharge points designated by the director in accordance with § 57.06(D) of this chapter.
      (23)   Any hazardous waste pharmaceuticals from healthcare facilities and reverse distributors.
   (C)   Pollutants, substances, or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW.
   (D)   National Categorical Pretreatment Standards. The categorical pretreatment standards found at Rule 62-660.400(1)(e), F.A.C. are hereby incorporated.
      (1)   Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the director may impose equivalent concentration or mass limits in accordance with Rule 62-625.410(4), F.A.C.
      (2)   When wastewater subject to a categorical pretreatment standard is mixed with wastewater not regulated by the same standard, the director shall impose an alternate limit using the combined wastestream formula in Rule 62-625.410(6), F.A.C.
      (3)   A user may obtain a variance from a categorical pretreatment standard if the user can prove, pursuant to the procedural and substantive provisions in Rule 62-625.700, F.A.C., that factors relating to its discharge are fundamentally different from the factors considered by the EPA when developing the categorical pretreatment standard.
      (4)   A user may obtain a net gross adjustment to a categorical standard in accordance with Rule 62-625.820, F.A.C.
   (E)   State Pretreatment Standards. State pretreatment standards located at F.A.C. 62-625 are hereby incorporated.
   (F)   Local limits.
      (1)   The city shall from time to time establish pollutant limits that are designed to protect against pass-through and interference. No person shall discharge wastewater containing concentrations of pollutants in excess of these local limits. The local limits shall apply at the point where the wastewater is discharged to the POTW. The director may impose mass limitations in addition to, or in place of, the concentration-based limitations above.
      (2)   The city reserves the right to establish, by ordinance or in wastewater discharge permits, more stringent standards or requirements on discharges to the POTW.
      (3)   The city may develop best management practices (BMPs) by ordinance or in individual wastewater discharge permits to implement local limits and the requirements of § 57.05 of this chapter.
   (G)   Dilution. No user shall ever increase the use of process water, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement. The director may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
(Ord. O-99-45, passed 12-1-99; Am. Ord. O-2001-41, passed 10-17- 01; Am. Ord. O-2012-16, passed 7- 18-12; Am. Ord. O-2013-24, passed 12-18-13; Am. Ord. O-2020-05, passed 3-20-20)