The following materials shall not be discharged into a sanitary sewer or into any side sewer discharging into any public sewer:
(a)
High Temperature Wastes. Any liquid or vapor having a temperature greater than 150 degrees Fahrenheit;
(b)
Flammable or Explosive Wastes. Any gasoline, oils, paints, benzene, naphtha, fuel, oil or other flammable or explosive liquids, solids or gases;
(c)
Obstructive Wastes. Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, manure or any other solid or viscous substance capable of causing obstructions to the flow in sewers or other interference with the proper operation of the city sewage system;
(d)
Inflammable or Explosive Substances. Any waters or wastes containing gasoline, benzene, naphtha, fuel, oil, lubricating oil or any other matter which is inflammable or explosive or capable of becoming inflammable or explosive upon introduction to the city sewage system;
(e)
Toxic or Poisonous Substances. Any waters or wastes which contain a toxic or poisonous substance or substances in sufficient quantity to injure or interfere with any sewage treatment process, or which constitutes a hazard to humans or animals, or creates a hazard in the receiving waters of the city sewage system;
(f)
pH Limitations. Any waters or wastes having a pH lower than 5.5 or higher than 9.0 or which have any other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the city and treating agencies;
(g)
Suspended Solids. Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such material at the sewage treatment plant, or is in excess of 400 milligrams per liter;
(h)
Noxious Substances. Any noxious or malodorous gas or substance capable of creating a public nuisance, including the contents of septic tanks and cesspools, without the prior written consent of the city;
(i)
Garbage. Any garbage that is not properly shredded garbage;
(j)
Paper and Plastic Products. Any paper and plastic products such as cups, dishes, napkins and milk containers, other than toilet paper;
(k)
Greases. Any greases (animal or vegetable), oils or matters containing animal or vegetable grease or oil of any nature in excess of 300 milligrams per liter;
(l)
BOD. Any matter containing a five-day biochemical oxygen demand in excess of 400 milligrams per liter;
(m)
Other. Winter water waste, stormwater, rainwater, roof runoff, saltwater, seawater, cooling water, subsurface water, process water from fish processing plants, and any other waste which may harm facilities or adversely affect the sewage treatment process.
(Ord. 930 § 2, 1980)