(A)   Except as hereinafter provided in § 51.086, no person shall discharge any of the following described waters or wastes to any public sewers:
      (1)   BOD in excess of 200 mg/l;
      (2)   COD in excess of 450 mg/l;
      (3)   Chlorine demand in excess of 15 mg/l;
      (4)   Any pollutant, including oxygen demanding pollutants (BOD and the like) released in a discharge at a flow rate or pollutant concentration which will cause interference with the POTW;
      (5)   Color (as from, but not limited to, dyes, inks or vegetable tanning solutions) shall be controlled to prevent light absorbency which would interfere with treatment plant processes or that prevent analytical determinations;
      (6)   Explosive liquid, solid or gas, gasoline, benzene, naphtha, fuel oil or other flammable waste;
      (7)   Garbage not properly shredded (no particle size greater than 1/2-inch);
      (8)   Petroleum oil, nonbiodegradable cutting oil, products of mineral oil origin, or grease, oil, wax or fat, whether emulsified or not, in amounts that will cause interference or pass through, or in excess of 50 mg/l, or other substances which may solidify or become viscous at temperatures between 32°F and 150°F;
      (9)   Industrial wastes in concentrations above those listed below:
Copper (Cu)
1.0 mg/l
Cadmium (Cd)
1.0 mg/l
Chromium Total
0.8 mg/l
Chromium Hexavalent
0.2 mg/l
Lead (Pb)
0.2 mg/l
Nickel (Ni)
1.0 mg/l
Zinc (Zn)
2.6 mg/l/day maximum
1.48 mg/l/month average
Silver (Ag)
0.1 mg/l
Phosphorus (P)
6.5 mg/l
Cyanide (Cn)
0.5 mg/l
Total Phenol
0.2 mg/l
Or any other metallic compounds in sufficient quantity to impair the operations of the sewage treatment processes.
      (10)   Inert suspended solids (such as, but not limited to, Fullers earth, lime slurries, and lime residues) or dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate) in unusual concentrations;
      (11)   Solid insoluble or viscous substances in amounts which will cause obstruction to the flow in the POTW resulting in interference (such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, tar, feathers, plastics, wood, hair, fleshings and the like);
      (12)   Noxious or malodorous gas (such as, but not limited to, hydrogen sulfide, sulphur dioxide or oxides of nitrogen) and other substances capable of public nuisance;
      (13)   Pollutants which will cause corrosive structural damage to the POTW, but in no case discharges with pH lower than 6.5 and greater than 9.5;
      (14)   Radioactive wastes or isotopes of such half-life or concentration which may exceed limits established by state and federal regulations;
      (15)   Suspended solids in excess of 250 mg/l;
      (16)   Heat in amounts which will inhibit biological activity in the POTW resulting in interference, but in no case heat in such quantities that the temperature at the POTW treatment plant exceeds 40°C (104°F);
      (17)   Water or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment to only such degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters;
      (18)   Discharges that would result in excess foaming during the treatment process. Excess foaming is any foam which, in the opinion of the Authority Manager, is a nuisance in the treatment process;
      (19)   Any pollutants which causes pass through or interference;
      (20)   Pollutants which create a fire or explosion hazard in the POTW, including, but not limited to, waste streams with a closed cup flash point of less than 140°F or 60°C using test methods specified in the latest edition of Standard Methods; or
      (21)   Pollutants which result in the presence of toxic gases, vapors or fumes within the POTW in a quantity which may cause acute health and safety problems.
   (B)   In addition to the foregoing, the following requirements shall apply:
      (1)   No slug loads, as defined in § 51.002, shall be permitted;
      (2)   New sources shall install, have in operation and start up all pollution control equipment necessary to meet applicable pretreatment standards before beginning discharge. Within the shortest feasible time (not to exceed 90 days) new sources must be in compliance with all pretreatment standards;
      (3)   All categorical and non-categorical users of the sewer system shall immediately notify the wastewater plant of all discharges that could cause problems with plant operations, including any slug loads. A written report is required within five days detailing conditions which caused the slug load to be discharged and steps taken to eliminate reoccurrence of the slug loading. Immediate notice shall be provided to the authority at 857-2709 with a follow-up report sent to the Authority at P.O. Box 789, Saugatuck, MI, 49453; and
      (4)   No trucked or hauled pollutants may be discharged to the POTW except at points designated by the POTW.
(Ord. passed 4-24-1995)  Penalty, see § 51.999