A. No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water or unpolluted industrial or commercial process water into any sanitary sewer.
B. Stormwater, surface drainage and unpolluted waters shall be admitted to only such sewers as are specifically designated as storm sewers or storm drains. Unpolluted process and cooling waters may, on written application and approval by the Superintendent of Sewer Department, Editor's Note: The Sewer Department was inactivated 1-24-2011 by Ord. No. 3-2011. See now Ch. 53, Department of Public Utilities; Superintendent of Public Works. be discharged to storm sewers or storm drains.
C. Except as hereinafter provided, no person shall discharge or cause to be discharged any of the following described wastes or waters to any public sewer:
(1) Any liquid or vapor having a temperature higher than 160° F.
(2) Any water or waste containing more than 100 parts per million by weight of fats, oils or greases.
(3) Any liquids, solids or gases which by reason of their nature or quality may cause fire or explosion or be in any other way injurious to persons, to the sewage works' structures or to the operation of those works.
(4) Any noxious or malodorous gas or substance which, either singly or by interaction with other wastes, is capable of creating a public nuisance or hazard to life or preventing entry into sewers for their maintenance and repair.
(5) Any garbage that has not been comminuted or shredded.
(6) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, bones, feathers, tires, plastic, wood, paunch manure, butcher's offal or any other solids or viscous substances capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewerage system or the sewage treatment works.
(7) Any water or waste having a pH lower than 5.5 or higher than 9.5 or having any corrosive property capable of causing damage or hazards to structures, equipment or personnel of the sewage works.
(8) Any water or waste containing any toxic substances in quantities sufficient to interfere with the biochemical processes of the sewage treatment works or that will pass through the sewage treatment works and exceed the state or interstate requirements for the receiving stream.
(9) Any water or waste that contains cyanide in excess of a concentration determined by multiplying 0.2 parts per million by the ratio of the average flow in the receiving stream to the design flow of the sewage treatment works.
(10) Any water or waste containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant.
(11) Any toxic radioactive isotopes, without special permit.
(12) Any water or waste that contains fluoride in excess of a concentration determined by multiplying 0.2 parts per million by the ratio of the average flow in the receiving stream to the design flow of the sewage treatment works.
D. No statement contained in this article shall be construed as prohibiting any special agreement or arrangement between the town and any person whereby an industrial waste of unusual strength or character may be admitted into the sanitary sewers for treatment by the town either before or after pretreatment.