(A) 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 requirement. Furthermore, no user may contribute the following substances to the POTW:
(1) Pollutants which create a fire or explosive hazard in the municipal wastewater collection and POTW, including but not limited to, wastestreams with a closed-cup flashpoint of less than 140°F (60°C) using the test methods specified in 40 C.F.R. part 261.21;
(2) Any wastewater containing pollutants (BOD and the like) released in a discharge at a flow rate or/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with either the POTW; or any wastewater treatment or sludge process, or which will constitute a hazard to humans or animals;
(3) Any wastewater having a temperature greater than 140°F (60°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);
(4) Petroleum oil, nonbiodegradable cutting oil or products of mineral oil or origin, in amounts that will cause interference or pass through;
(5) Any 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;
(6) Any trucked or hauled pollutants, except at discharge points expressly designated in writing by the town;
(7) Any 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, a hazard to life or to prevent entry into the sewers for maintenance and repair;
(8) Any 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 town’s NPDES permit. Color (in combination with turbidity) shall not cause the treatment plant effluent to reduce the depth of the compensation point for photosynthetic activity by more than 10% from the seasonably established norm for aquatic life;
(9) Any wastewater containing any radioactive wastes or isotopes except as specifically approved by the Superintendent in compliance with applicable state or federal regulations;
(10) Stormwater, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water and unpolluted industrial wastewater, unless specifically authorized by the Superintendent;
(11) Any sludges, screenings or other residues from the pretreatment of industrial wastes;
(12) Any medical wastes, except as specifically authorized by the Superintendent in a wastewater discharge permit;
(13) Any wastewater causing the treatment plant’s effluent to fail a toxicity test; and
(14) Any wastes containing detergents, surface active agents or other substances which may cause excessive foaming in the POTW.
(B) Wastes prohibited by this section shall not be processed or stored in a manner that they could be discharged to the POTW. All floor drains located in process or materials storage areas must discharge to the user’s pretreatment facility before connecting with the POTW.
(C) New connections from stormwater inflow sources into the sanitary sewer portions of the town’s sewerage system are hereby prohibited. The Superintendent shall institute procedures to ensure that new sewers and connections to the sanitary sewers are properly designed and connected in that regard.
(D) The town reserves the right to establish, by ordinance or in wastewater discharge permits, more stringent standards or requirements on discharges to the POTW if deemed necessary to comply with the objectives of this subchapter or the general and specific prohibitions in this subchapter.
(Ord. 2011-5, passed 3-14-2011)