A. 
General prohibitions. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes pass-through or interference. These general prohibitions apply to all users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, state, or local pretreatment standards or requirements.
B. 
Specific prohibitions. No user shall introduce or cause to be introduced into the POTW the following pollutants, substances, or wastewater:
(1) 
Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, waste streams with a closed-cup flashpoint of less than 140° F. (60° C.) using the test methods specified in 40 CFR 261.21;
(2) 
Wastewater having a pH of less than 6.0 or more than 9.0, or otherwise causing corrosive structural damage to the POTW or equipment;
(3) 
Solid or viscous substances in amounts which will cause obstruction of the flow in the POTW resulting in interference, but in no case solids greater than 1/2 inch 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, waste paper, wood, petroleum products (including plastics, gasoline, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil), mud, glass grinding or polishing wastes;
(4) 
Pollutants, including oxygen-demanding pollutants (BOD, etc.), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the POTW; except, however, that in the case of compatible pollutants (see definition in § 187-4 of this Part 1), such discharge is permissible to the extent that it is in accordance with any enacted surcharge policy through which the discharger pays the POTW-TP for the treatment/removal of certain pollutants; but provided further, that in no case shall a slug load have a flow rate or contain concentrations or qualities of pollutants that exceed for any time period longer than 15 minutes more than five times the average twenty-four-hour concentration, quantities or flow during normal operation of the individual discharge and/or of the POTW-TP;
(5) 
Wastewater having a temperature greater than 104° F. (40° C.), or which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed 104° F. (40° C.);
(6) 
Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass-through;
(7) 
Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems;
(8) 
Trucked or hauled pollutants, except at discharge points designated by the Superintendent in accordance with § 187-14 of this Part 1;
(9) 
Noxious or malodorous liquids (including automobile anti-freeze), gases, solids, or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sewers for maintenance or repair;
(10) 
Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the treatment plant's effluent, thereby violating the POTW-TP's NPDES permit;
(11) 
Wastewater containing any radioactive wastes or isotopes except in compliance with applicable state or federal regulations;
(12) 
Stormwater, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted wastewater, unless specifically authorized by the POTW-TP;
(13) 
Sludges, screenings, or other residues from the pretreatment of industrial wastes;
(14) 
Medical wastes, except as specifically authorized by the POTW-TP in a wastewater discharge permit;
(15) 
Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test;
(16) 
Detergents, surface-active agents, or other substances which might cause excessive foaming in the POTW;
(17) 
Fats, oils, or greases of animal or vegetable origin in concentrations greater than are stated in § 187-8 of this Part 1;
(18) 
Wastewater causing two readings on an explosion hazard meter at the point of discharge into the POTW, or at any point in the POTW, of more than 5% or any single reading over 10% of the lower explosive limit of the meter.
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.
Users must comply with the categorical pretreatment standards found at 40 CFR Chapter I, Subchapter N, Parts 405-471.
State requirements and limitations on discharges shall apply in any case where they are more stringent than federal requirements and limitations, or those in this Part 1.
A. 
The POTW-TP is authorized to establish local limits pursuant to 40 CFR 403.5(c).
B. 
The following pollutant limits are established to protect against pass-through and interference. Except as may be approved by the particular POTW-TP, no person shall discharge wastewater containing in excess of the following daily maximum limit:
(1) 
MTMSA Eureka Wastewater Treatment Plant.
Toxic Pollutants
mg/l
Arsenic
0.10
Barium
2.00
Boron
1.00
Cadmium
0.02
Chrome (total)
1.00
Chrome (hexavalent)
0.10
Copper
1.00
Cyanide
0.20
Endrin
0.0004
Fluoride
4.00
Iron
5.00
Lead
0.10
Lindane
0.008
Mercury
0.005
Methoxychlor
0.20
Nickel
1.00
Phenol
0.50
Selenium
0.02
Silver
0.10
Tin
3.00
Total halogenated organics
5.00
Total for all priority pollutants
30.0
Toxaphene
0.01
Vanadium
3.00
Zinc
1.00
2, 4-D
0.20
2, 4, 5-TP Silvex
0.02
Oil and grease:
(a) 
Wastewater containing more than 25 milligrams per liter of petroleum oil, nonbiodegradable cutting oils or products of mineral oil origin.
(b) 
Wastewater containing more than 100 milligrams per liter of oil, greases or fats of an animal or vegetable origin.
(c) 
Wastewater from industrial plants containing floatable oils, fat or grease in excess of 25 milligrams per liter.
Compatible (Conventional) Pollutants
mg/l
BOD
200
TSS
200
Ammonia nitrogen as N
25
Organic nitrogen as N
15
TKN as N
40
Total phosphorus as P
10
Phosphorus (soluble) as P
7
TDS
750
(2) 
Ambler Borough Wastewater Treatment Plant.
[Amended 7-14-2014 by Ord. No. 14-280]
Toxic Pollutants
mg/l
Arsenic
0.19
Cadmium
0.02
Chromium (total)
6.01
Copper
1.28
Cyanide (total)
0.36
Aluminum
14.51
Chromium, hexavalent
0.42
Molybdenum
Monitor only
Selenium
0.13
Lead
0.32
Mercury
.0009
Nickel
2.16
Phenols
3.26
Silver
0.96
Zinc
1.55
Oil and grease:
(a) 
Wastewater containing more than 25 milligrams per liter of petroleum oil, nonbiodegradable cutting oils or products of mineral oil origin.
(b) 
Wastewater containing more than 100 milligrams per liter of oils, greases or fats of an animal or vegetable origin.
(c) 
Wastewater from industrial plants containing floatable oils, fat or grease in excess of 25 milligrams per liter.
Compatible (Conventional) Pollutants
mg/l
BOD
N/A
TSS
N/A
Ammonia nitrogen as N
N/A
Organic nitrogen as N
15
TKN as N
40
Total phosphorous as P
52.64
Phosphorus (soluble) as P
N/A
TDS
Monitor only
(3) 
Chalfont-New Britain Township Joint Sewage Authority Wastewater Treatment Plant.
Toxic Pollutants
mg/l
Arsenic
4.0
Beryllium
0.005
Cadmium
0.650
Chromium (total)
1.0
Copper
1.0
Cyanide (total)
0.75
Lead
0.50
Mercury
0.020
Nickel
2.0
Selenium
0.140
Silver
0.730
Zinc
1.00
Oil and grease:
(a) 
Wastewater containing more than 100 milligrams per liter of petroleum oil, nonbiodegradable cutting oils or products of mineral oil origin.
(b) 
Wastewater containing more than 100 milligrams per liter of oil, greases or fats of an animal or vegetable origin.
Compatible (Conventional) Pollutants
mg/l
BOD
250*
TSS
250*
Ammonia nitrogen as N
25*
Organic nitrogen as N
15
TKN as N
40
Total phosphorus as P
6.6*
Phosphorus (soluble) as P
7
TDS
750
* Surcharge for strong wastes:
Industrial and/or commercial establishments discharging strong wastes to the sewer system having a greater BOD that 250 mg/l, a total suspended solids concentration greater than 250 mg/l, an ammonia nitrogen concentration greater than 25 mg/l, or a phosphorus concentration greater than 6.6 mg/l, shall pay a strength of waste surcharge, in addition to the basic volume rental or charge which shall be made in accordance with policies/procedures adopted by the Chalfont-New Britain Township Joint Sewage Authority.
(4) 
HTMA Wastewater Treatment Plant.
[Amended 2-9-2015 by Ord. No. 15-287]
Toxic Pollutants
mg/l
Arsenic
0.020
Bis (2-Ethylhexyl) Phthalate
0.250
Cadmium
0.010
Chromium (total)
2.00
Copper
2.00
Cyanide (total)
0.500
Lead
0.200
Mercury
0.002
Methylene Chloride
0.200
Nickel
0.250
Phenols (total)
0.500
Silver
0.300
Trichloroethylene
0.500
Zinc
1.00
Oil and grease:
(a) 
Wastewater containing more than 25 milligrams per liter of petroleum oil, nonbiodegradable cutting oils or products of mineral oil origin.
(b) 
Wastewater containing more than 100 milligrams per liter of oil, greases or fats of an animal or vegetable origin.
(c) 
Wastewater from industrial plants containing floatable oils, fat or grease in excess of 25 milligrams per liter.
Compatible (Conventional) Pollutants
mg/l
BOD
200
TSS
200
Ammonia nitrogen as N
25
Organic nitrogen as N
15
TKN as N
40
Total phosphorus as P
10
Phosphorus (soluble) as P
7
TDS
750
(5) 
Lansdale Borough Wastewater Treatment Plant.
Toxic Pollutants
mg/l
Cadmium, total
0.3
Chromium, total
6.0
Copper, total
1.1
Lead, total
1.2
Phenol, total
0.2
Selenium, total
0.3
Zinc, total
1.7
Total toxic organics*
Monitor only
Molybdenum, total
0.4
PCB5
0.007
Any single toxic organic*
Monitor only
Bis (2-ethylhexyl) phthalate
0.21
Ethylbenzene
1.66
Methylene Chloride
0.31
Tetrachlorethane
0.01
Tetrachloroethene
0.25
Toluene
2.08
Butylbenzylphthalate
2.37
Di-n-butylphthalate
1.05
Flouranthene
2.00
Napthalene
3.98
Phenanthrene
0.05
Compatible (Conventional) Pollutants
mg/l
BOD5**
750 (daily average concentration)
TSS**
750 (daily average concentration)
Ammonia nitrogen as NH3-N**
50 (daily average concentration)
Phosphate as P
10 (daily average concentration)
No user may discharge total dissolved solids (TDS) in amounts which cause or contribute to pass-through or interference at the POTW or in violation of any other portion of this Part 1.
Oil and grease:
Instantaneous maximum concentration of oil and grease shall not exceed 100 mg/l.
NOTES:
* Total toxic organics (TTO) is defined as the sum of all concentrations greater than the detection limit of the volatile organics, acid extractable and base/neutral extractable compounds of the 126 priority pollutants. No user may discharge any single toxic organic pollutant or combination of toxic organic pollutants in amounts which cause or contribute to pass-through or interference at the POTW.
** Any user which discharges wastewater to the Borough's sewer system having concentrations of five-day biochemical oxygen demand (BOD5), total suspended solids (TSS) and ammonia-nitrogen (NH3-N) in excess of the following concentrations will be subject to the Borough's strength surcharge program:
BOD5: 230 mg/l;
TSS: 200 mg/l;
NH3 -N: 25 mg/l.
(6) 
Upper Gwynedd Township Wastewater Treatment Plant.
Toxic Pollutants
mg/l
Aluminum
13.9
Arsenic
0.09
Cadmium
0.003
Copper
0.63
Cyanide, free
0.05
Lead
0.04
Dichlorobromomethane
0.005
Zinc
0.77
Chlorodibromomethane
0.003
Chloroform
0.08
Chromium, total
2.22
Chromium (+6)
0.15
Cyanide, total
0.30
Cyanide, amenable
0.05
Mercury
0.0005
Nickel
0.39
Phenols
44.0
Selenium
0.02
Silver
0.07
Residual chlorine
0.60
Oil and grease (fog)
100
Color
200 PCU
pH
6.0 to 9.0 S.U.
Total iron
Monitor only
Compatible (Conventional) Pollutants
mg/l
CBOD-5
750
COD
1,500
TSS
750
Ammonia
50
Total phosphorus as P
24.9
The specific pollutant discharge limitations listed above are the highest allowable concentration in any type of sample, either a grab or composite, collected over any time interval. All concentrations for metallic substances are for total metal, unless indicated otherwise.
The specific pollutant discharge limitations listed above apply at the point where the wastewater is discharged to the POTW or at the point designated by the POTW-TP.
C. 
The above limits for toxic pollutants apply at the end of the process, prior to mixing with nonprocess flows, and for other pollutants apply at the point where the wastewater is discharged to the POTW, which for purposes of this Part 1 includes all points within and throughout the collection system. All concentrations for metallic substances are for total metal unless indicated otherwise. The POTW-TP may impose mass limitations in addition to, or in place of, the concentration-based limitations above. All studies performed by or on behalf of MTMSA to verify plant performance at a user's request shall be conducted at that user's sole expense. MTMSA and/or Montgomery Township may impose a surcharge by resolution or sewer rent ordinance or by including the surcharge in any permit for any exceedance of the compatible (conventional) pollutant limitations. All other violations for the other pollutants listed under § 187-8 of this Part 1 shall be brought into compliance by the discharger.
D. 
As a condition of providing sewer service to users, or of continuing sewer service to users, and whether or not a permit has been issued for the discharge. MTMSA and/or the POTW-TP shall be permitted to enter upon a user's property for the purpose of defining and quantifying pollutants being discharged to the POTW by the user. Should testing establish the presence of pollutants entering the POTW from the user's property in excess of the limits established by this Part 1, and specifically this section, the user shall be responsible for all costs of testing plus a ten-percent administrative charge.
E. 
The POTW-TP may develop best management practices (BMPs), by ordinance or in wastewater discharge permits, to implement local limits and the requirements of § 187-5 of this Part 1.
Each POTW-TP reserves the right to establish, by ordinance or in wastewater discharge permits, more stringent standards or requirements on discharges to the POTW consistent with the purpose of this Part 1.
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 POTW-TP 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.