The discharge of nonacceptable industrial wastes into the sewerage system, whether directly or indirectly, is prohibited. Nonacceptable wastes shall be the following described substances, materials, waters or wastes:
(a) Any liquid or vapor having a temperature higher than 150 degrees Fahrenheit (65 degrees Centigrade).
(b) Any water or waste containing fats, wax or similar substances which may solidify or become viscous at a temperature between 32 and 150 degrees Fahrenheit.
(c) Any water or wastes containing grease and emulsified oil exceeding on analysis an average of 100 milligrams per liter (833 pounds per million gallons) of either soluble matter.
(d) Any gasoline, benzene, naphtha, fuel oil or mineral oil or other flammable or explosive liquids, solids or gas.
(e) Any garbage that has not been properly comminuted.
(f) Any intermittent or continuous contributions of substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operations of the sewage treatment plant, such as, but not limited to, ashes, sand, mud, cinders, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, etc.
(g) Any excess amounts of phenols or similar substances which cause the Village to be in violation of receiving water quality objectives established by the State or any other agency of jurisdiction.
(h) Any waters or wastes, acid, or alkaline in reaction, and having corrosive properties capable of causing damage to or hazard in the sewers or to the structures, equipment and personnel of the Village. Free acids and alkalies of such wastes shall be neutralized, at all times, within a permissible range of pH, between 5.5 and 8.5.
(i) No person, firm or corporation shall be permitted to connect to or discharge wastewater to the Village of Ottawa’s sewage system unless it has been determined by the Village that there is sufficient capacity in the system to collect, convey and treat the proposed wastewater discharge of such person, firm or corporation.
(j) Any materials, such as, but not limited to, copper, zinc, chromium and other similar toxic substances shall be limited to existing concentrations in the waste water as it arrives at the sewage treatment plant. Some of the values are as follows:
Milligrams per liter | |
Iron (Fe) | 5 |
Chromium (Cr) (hexavalent) | 5 |
Copper (Cu) | 2 |
Zinc (Zn) | 3 |
Cadmium (Cd) | 3 |
Lead (Pb) | 1 |
(k) Any cyanides in excess of two milligrams per liter as Cn in the wastes from any outlet in the public sewer.
(l) Any toxic, noxious or malodorous gas or substances, which either singly, or by interaction with other wastes, is capable of causing interference with the waste water treatment processes, hazard to life or public nuisance or which prevents entry into sewers for maintenance and repair.
(m) Any radioactive wastes or isotopes of such half-life or concentration that would exceed prearranged limits which shall be set in compliance with applicable State and Federal regulations.
(n) Any storm water, surface water, ground water, roof run-off water, subsurface drainage, uncontaminated cooling water or unpolluted industrial process waters shall be discharged to a natural outlet or storm sewer.
(Ord. 97-23. Passed 8-11-97.)