Specific Prohibitions

No business shall contribute or cause to be contributed into the wastewater treatment system the following pollutants, substances, or wastewater:

  1. Pollutants which create a fire or explosive hazard in the wastewater treatment system, including, but not limited to, waste streams with a closed cup flash point of less than 140º Fahrenheit (60º Celsius) using the test methods specified in 40 CFR 261.21. Materials specifically prohibited from discharge into the wastewater system include the following as well as any others as may be prescribed by the Director: 
    1. Alcohols
    2. Aldehydes
    3. Benzene
    4. Bromates
    5. Carbides
    6. Chlorates
    7. Ethers
    8. Fuel Oil
    9. Gasoline
    10. Hydrides
    11. Kerosene
    12. Ketones
    13. Naphtha
    14. Perchlorates
    15. Peroxides
    16. Solvents
    17. Sulfates
    18. Toluene
    19. Used Antifreeze
  2. Solid or viscous substances in amounts which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater system
  3. Petroleum oil, non-biodegradable cutting oil or products of mineral oil origin, in amounts that will cause interference or pass through
  4. Any wastewater or waste having a pH lower than 5.0 or higher than 10.5 at any time, or having any corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the wastewater system
  5. Any wastewater containing pollutants, including oxygen-demanding pollutants, (Biochemical Oxygen Demand (BOD), etc.) in sufficient quantity, (flow or concentration) either singly or by interaction with other pollutants, to cause interference with the wastewater system
  6. Any wastewater having a temperature which will inhibit biological activity in the wastewater treatment plant resulting in interference, but in no case wastewater which causes the temperature at the influent to the treatment plant to exceed 104º Fahrenheit (40º Celsius)
  7. Any pollutants which result in the presence of toxic gases, vapors or fumes within the wastewater system in a quantity that may cause acute worker health and safety problems
  8. Any trucked or hauled pollutants, except at discharge points designated by the Director
  9. Any noxious or malodorous liquids, gases, or solids or other wastewater 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
  10. Any substance which may cause the wastewater treatment plant's effluent or any other product of the system 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 wastewater system cause the wastewater plant to be in noncompliance with sludge use or disposal regulations or permits.
  11. Any wastewater or waste which imparts color which cannot be removed by the treatment process, including, but not limited to, dye wastes, paint waste, and tanning solutions, which consequently imparts sufficient color to the treatment plant's effluent to render the waters injurious to public health or secondary recreation or to aquatic life and wildlife or to adversely affect the palatability of fish or aesthetic quality or impair the receiving waters for any designated uses.
  12. Any wastewater containing any radioactive wastes or isotopes except as specifically approved by the Director in compliance with applicable State or Federal regulations
  13. Storm water, rainwater, groundwater, street drainage, roof top drainage, basement drainage, subsurface drainage or yard drainage, unless specifically authorized by the Director
  14. Any sludges, screenings or other residues from the pretreatment of waters or wastewaters or industrial wastes except as specifically authorized by the Director
  15. Any waste, wastewater, or any other substance discharged directly into a manhole, clean-out pipe, or other opening in a sanitary sewer other than through an approved building sewer without prior designation by the Director as an approved point of discharge
  16. Any material containing ammonia, ammonium salts, or chelating agents that will produce metallic complexes that interfere with the municipal wastewater system
  17. Any hazardous waste except as specifically authorized by the Director
  18. Any wastewater causing the treatment plant effluent to violate State Water Quality Standards for toxic substances as described in 15A NCAC 2B.0200
  19. Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
  20. Wastes containing any toxic or poisonous substances in sufficient quantity:
    1. To interfere with the biological processes used in a wastewater treatment system, singularly or in combination.
    2. Which, singularly or in combination with other liquid wastes, upon passing through a wastewater treatment plant, will be harmful to persons, livestock or aquatic life utilizing the receiving streams into which water from a wastewater treatment plant is discharged.
  21. Water or wastes which require excessive quantities of chemicals for stabilization in addition to biological treatment.
  22. Any wastes containing detergents, surface active agents, or other substances which may cause excessive foaming in the municipal wastewater system.
  23. Waste which causes two successive readings on an explosion hazard meter at the point of discharge into the system (or at any point in the system) to be more than 5%, or which causes any single reading to be over 10% of the lower explosive limit (LEL) of the meter.
  24. Any medical wastes, except as specifically authorized by the Director
  25. Any silver-rich solution from a photographic processing facility without treatment