Except as provided in this chapter, no person shall discharge or cause to be discharged to any public sewer, ditch, drain or culvert any of the following.
(a) Any water, waste or vapor containing heat in amounts which will accelerate the biodegradation of wastes, cause the formation of excessive amounts of hydrogen sulfide in the sewage works or inhibit biological activity in the wastewater treatment plant. In no case shall heated discharges cause the temperature in the public sewer to exceed 65°C (150°F), or the temperature of the influent at the treatment plant to exceed 40°C (104°F).
(b) Any water or waste containing substances that will solidify or become discernibly viscous at temperatures between 30°F and 150°F, including, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal or metal hydroxide slurries, glass, rags, feathers, tar, asphalt or asphaltic materials, plastics, wood, paunch manure, hair and fleshings, entrails, beer or distillery spent grains, chemical residues, paint residues, cannery wastes, bulk solids or other solid or viscous substances capable of causing obstruction to the flow in sewers or other interference with the operation of the sewage works.
(c) Any water or waste containing fat, oil or grease exceeding 100 mg/l.
(d) Any water or waste containing nonbiodegradable grease or oils of mineral or petroleum origin. Industrial cooling water which may be polluted with insoluble oils, grease or suspended solids shall be pretreated to remove the pollutants and the resultant wastewater shall be discharged according to § 1042.14.
(e) Any water or waste which will create a fire or explosion hazard, including but not limited to, gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas.
(f) Any water or waste containing more than ten mg/l of hydrogen sulfide, sulfur dioxide or nitrous oxide.
(g) Any garbage that has not been properly shredded.
(h) Any water or waste containing phenolic compounds in excess of 1.0 mg/l. This limit may be modified if the aggregate of contributions throughout the service area creates treatment difficulties or produces a prohibitive effluent discharge to receiving waters.
(i) Any water or waste, acid or alkaline in reaction, having corrosive properties cable of causing damage or hazard to structures, equipment and personnel. Free acids or alkalies of such wastes must be neutralized at all times within the permissible range of pH 5.5 to 9.5.
(j) Any water or waste containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, which injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a public nuisance, prevent entry into the sewers for maintenance and repair, cause the treatment plant effluent, residues, sludges or scums to be unsuitable for reclamation and re-use, or interfere with the reclamation process.
(k) Any water or waste containing suspended or dissolved solids of such character and quantity that unusual provisions, attention or expenses are required to handle these solids at the wastewater treatment plant.
(l) Any slugload of any pollutant, including oxygen demanding pollutants, released in a single extraordinary discharge episode of such volume or strength as to cause interference in the sewage works.
(m) Any water or waste containing in excess of 0.02 mg/l total identifiable chlorinated hydrocarbons.
(n) Any water or waste which causes a detrimental environmental impact or nuisance in the waters for the state, or which causes the quality of the wastewater treatment plant effluent to violate the NPDES permit limitations or applicable water quality standards.
(Ord. 86-32, passed 6-23-1986)