No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters to any sanitary sewer.
Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as storm sewers, or to a natural outlet. Uncontaminated industrial cooling water or unpolluted industrial process waters may be discharged on approval of the Director and upon obtaining a DEC permit to a storm sewer or natural outlet.
No person shall discharge or deposit or cause to allow to be discharged or deposited into the wastewater treatment system any wastewater which contains the following:
A. 
Flammable or explosive mixtures. Liquid, 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 wastewater treatment system or to the operation of the system. At no time shall there be discharged any wastestream with a closed cup flashpoint of less than 140º F. or 60º C. using the test methods specified in 40 CFR 261.21. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, fuel oil, crank case oil, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides.
B. 
Toxic substances. Any toxic substances in amounts exceeding standards promulgated by the Administrator of the United States Environmental Protection Agency pursuant to Section 307(a) of the Act, and chemical elements or compounds, phenols or other taste or odor producing substances, or any other substances which singly or by interaction with other wastes are not susceptible to treatment or which may interfere with the biological processes or efficiency of the wastewater treatment system, or that will pass through the system without being treated to the required degree.
C. 
Corrosive wastes. Any waste which will cause corrosion or deterioration of the wastewater treatment system. All wastes discharged to the public sewer system must be a pH value in the range of six to 10 standard units. Prohibited materials include, but are not limited to, acids, sulfides, concentrated chloride and fluoride compounds and substances which will react with water to form acidic products.
[Amended 5-10-1999 by L.L. No. 3-1999]
D. 
Solid or viscous wastes. 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 wastewater treatment system such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, hair and fleshings or hides, animal guts or tissues, entrails, bones, spent lime, stone or marble dust, grass clippings, spent grains, spent hops, waste paper, asphalt residues, residues from refining or processing of fuel or lubricating oil and similar substances. This prohibition includes any wastewater which by interaction with other waters or wastes in the public wastewater treatment system forms suspended solids which obstruct the flow in the sewer or create a condition that interferes with the proper operation of the wastewater treatment system.
E. 
Oil and grease. Any wastewater containing fats, wax, grease or oils, whether emulsified or not, or containing substances which may solidify or become viscous at temperatures between 32º F. and 150º F. (0º C. and 65º C.), and be determined by the Director to be potentially harmful to the operation and efficiency of the POTW.
F. 
Excessive temperature. Any wastewater which exceeds a temperature of 150º F. (65º C.) or which causes the temperature of the influent to the wastewater treatment works to exceed 104º F. (40º C.).
G. 
Improperly shredded garbage. Garbage that has not been ground or comminuted to such a degree that all particles will be carried freely in suspension under flow conditions normally prevailing in the public sewers.
H. 
Noxious materials. Noxious or malodorous solids, liquids or gases, which either singly or by interaction with other wastes are capable of creating a public nuisance or hazard to any form of life, or are or may be sufficient to prevent entry into a sewer for its maintenance and repair.
I. 
Radioactive wastes. Radioactive wastes or isotopes of such half-life or concentration that they do not comply with regulations or orders issued by the appropriate authority having control over their use and/or which will or may cause damage or hazards to the wastewater treatment system or personnel operating the system.
J. 
Excessive discharge rate. Quantities of wastewater flow, concentrations, or both, which constitute a slug as defined herein.
K. 
Discolored material. Wastes with color such as but not limited to dye water or vegetable tanning solution that are not removable by the treatment process.
L. 
Wastes with unusually high biochemical oxygen demand, chlorine demand, total suspended solids, phosphorus or ammonia nitrogen levels except when a surcharge agreement has been effected.
M. 
Any other wastes, which in the opinion of the Director may be detrimental to the maintenance and operation of the wastewater treatment system or may affect the sewage treatment process to the extent that the effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters. In forming his opinion as to the acceptability of wastes, the Director will give consideration to such factors as the quantities of such 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 works, degree of treatability of wastes in the wastewater treatment works and other pertinent factors.
A. 
General limitations on incompatible pollutants. No person shall discharge or convey, or permit or allow to be discharged or conveyed to a public sanitary sewer any wastewater containing incompatible pollutants of such character or quantity that will:
(1) 
Violate pretreatment standards.
(2) 
Cause the wastewater treatment works to violate its SPDES permit requirements.
(3) 
Violate the provisions of this chapter or other applicable laws, rules or regulations.
(4) 
Not be susceptible to treatment or interfere with the process or efficiency of the treatment system.
(5) 
Exceed the instantaneous maximum limits as defined in § 147-3 herein.
[Added 5-10-1999 by L.L. No. 3-1999]
B. 
Specific limitations on certain incompatible pollutants.
(1) 
The following are the maximum concentrations of pollutants allowable in wastewater discharges to the wastewater treatment system.
Parameter
30-Day Average Effluent Concentration Limits (mg/l)
1-Day Maximum Effluent Concentration Limit (mg/l)
Arsenic (total)
0.1
0.2
Cadmium
0.3
0.7
Chromium (total)
1.7
2.8
Copper (total)
2.1
3.4
Cyanide (C12 amenable)
0.3
0.9
Cyanide (total)
0.7
1.2
Fluorides
4.0
Lead (total)
0.4
0.7
Mercury (total)
0.1
0.2
Nickel (total)
2.4
4.0
Selenium (total)
0.1
0.2
Silver (total)
0.3
0.5
Sulfide
6.0
Zinc (total)
1.5
2.6
Total Toxic Organics
2.1
(2) 
For the purpose of enforcement of discharge limits, consecutive samples taken and analyzed shall be considered as being taken on consecutive days even though one or more nonsampling days intervene. In applying the pretreatment standards where more than one but less than 30 samples have been taken and analyzed during any reporting period, the following formula shall be used to establish the standard for each pollutant which the average of the samples shall not exceed:
Lx = L30 + F/(L1 - L30)
Where:
Lx
=
Standard not to be exceeded by the average of x consecutive samples.
L1
=
Maximum for any one day.
L30
=
Standard not to be exceeded by the average of 30 consecutive days.
F
=
Multiplier for number of samples analyzed (from table below).
Table Effluent
No. of Samples
1
1.00
2
0.597
3
0.430
4
0.35
5
0.266
6
0.223
7
0.186
8
0.167
9
0.141
10
0.127
11
0.114
12
0.109
13
0.089
14
0.077
15
0.064
16
0.058
17
0.052
18
0.045
19
0.039
20
0.033
21
0.030
22
0.026
23
0.023
24
0.020
25
0.016
26
0.013
27
0.010
28
0.007
29
0.003
30
0.000
(3) 
Dilution of any wastewater discharge for the purpose of satisfying these requirements shall be considered a violation of this chapter.
C. 
Limitations on compatible pollutants. In cases where effluent, characteristics of an industrial or commercial discharge exceed the permissible limits for the compatible pollutants listed below, the acceptability of such waste shall be left to the engineering judgment of the Director, or any other federal, state or local agencies having jurisdiction. The primary judgment criteria for the determination of acceptability by the Director will be whether the admission of such waste will, when added to the existing wastewater flows, cause the wastewater treatment system to violate its SPDES permit or other provisions of this chapter. If it is determined the wastewater is acceptable, permission to discharge said compatible pollutants may be granted under conditions stated by the Director. However, the City shall require, in accordance with Article IX, the payment of an additional industrial surcharge for the additional cost of operation and maintenance capital construction costs to cover the cost of treating the excessive strength wastewater.
D. 
Noncity wastewater.
(1) 
No commercial or private collector (hauler) of wastewater shall discharge to the City wastewater system without the prior approval of the Director. Approval shall be based on the estimated impact of the discharge on the City wastewater system in accordance with this chapter. The charge for such discharging shall be determined on an individual basis by the Director.
(2) 
No person shall discharge waste other than from premises within the City which are the source of such waste except in the discretion of the Director and on terms and conditions, including fees, established by the Director.