(A) General prohibitions. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater that causes pass through or interference. These general prohibitions apply to all users of the POTW.
(B) Specific prohibitions.
(1) A user of the POTW, whether or not the user is subject to national categorical standards or state, local, or any other national pretreatment standard or requirement, shall not allow the introduction of the following into the POTW:
(a) A pollutant from any source of non-domestic wastewaters that could pass through or cause interference with the operation or performance of the POTW;
(b) Pollutants that create a fire or explosive hazard in the POTW, including, but not limited to, waste streams with a closed-cup flashpoint of less than 140º F. (60º C.) using the test methods specified in 40 CFR 261.21;
(c) Wastewater having a pH less than 5.0 or greater than 10.0 or otherwise causing corrosive structural damage to the POTW or equipment;
(d) Solid or viscous substances in amounts that will cause obstruction to the flow in a sewer or other interference with the operation of the POTW. Total suspended solids concentrations in excess of 250 mg/l will be subject to surcharge as identified in § 53.08;
(e) Pollutants, including oxygen demanding pollutants (such as CBOD), released in a discharge at a flow rate or pollutant concentration that could cause interference with the POTW. CBOD concentrations in excess of 250 mg/l will be subject to surcharge as identified in § 53.08;
(f) Wastewater having a temperature greater than (110º F. (45º C.)), or which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater that causes the temperature at the introduction into the treatment plant to exceed 104º F. (40º C.);
(g) Petroleum oil, non- biodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through;
(h) Pollutants that could 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;
(i) Trucked or hauled pollutants, except with the permission of the POTW and when introduced at discharge points designated by the Wastewater Superintendent;
(j) Noxious or malodorous liquids, 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 quality of life, or to prevent entry into the sewers for maintenance or repair;
(k) Wastewater which imparts color that cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently impact color to the treatment plant's effluent, thereby violating the town's NPDES permit;
(l) Wastewater containing any radioactive wastes or isotopes except in compliance with applicable state or federal regulations;
(m) Stormwater, surface water, ground water, artesian well water, roof runoff, Subsurface drainage, swimming pool drainage, condensate, deionized water, non- contact cooling water, and unpolluted wastewater, unless specifically authorized by the Wastewater Superintendent;
(n) Sludges, screenings, or other residues from the pretreatment of industrial wastes;
(o) Medical wastes, except as specifically authorized by the Wastewater Superintendent in a wastewater discharge permit;
(p) Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test;
(q) Detergents, surface-active agents, or other substances that may cause excessive foaming in the POTW;
(r) 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; or
(s) Ammonia-nitrogen discharges to the publicly owned treatment works must be in concentrations that do not cause pass through and interference. Ammonia-nitrogen concentrations in excess of 25 mg/l will be subject to surcharge as identified in § 53.08;
(t) Phosphorus discharges to the publicly owned treatment works must be in concentrations that do not cause pass through and interference. Total phosphorus concentrations in excess of 10 mg/l will be subject to surcharge as identified in § 53.08.
(2) Pollutants, substances, or wastewater prohibited by this section must not be processed or stored in such a manner that they could be discharged to the POTW.
(Ord. 2019-5, passed 4-22-19)