(A) Subject to the provisions of this section, no person may discharge or cause to be discharged any of the following described waters or wastes to any part of the city’s sanitary sewer system:
(1) Any clothing, rags, textile remnants and the like, except scraps or fibers that will pass through a one-quarter inch mesh screen or its equivalent in screening ability;
(2) Any liquid or vapor having a temperature higher than 104°F;
(3) Any water or waste containing more than 100 milligrams per liter (mg/l) of fats, oils or grease;
(4) Any liquids, solids or gases that may cause fire or explosion or be in any way injurious to persons, any portion of the city’s sewage treatment system or the operation of this system;
(5) Any liquid wastes in which total suspended solids exceed 600 milligrams per liter;
(6) Any liquid wastes having a BOD of more than 350 milligrams per liter;
(7) Any waters or wastes having a stabilized pH lower than 5.0 or higher than 9.0 or having other corrosive property capable of causing damage or hazard to structures, equipment or personnel of the sewage treatment system;
(8) Any waters or wastes containing any toxic or poisonous substances or any other materials (including, but not limited to, heavy metals or chemicals) in sufficient quantities to interfere with the biological processes used in the sewage treatment works or that will pass through the sewage treatment works and harm persons, livestock or aquatic life utilizing the natural outlet;
(9) Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant;
(10) Any noxious or malodorous gas or substance capable of creating a public nuisance;
(11) Any garbage that has not been properly shredded;
(12) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, bones, feathers, tar, plastic, wood, paunch manure, butcher’s offal or any other solid or viscous substances capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage collection system or the sewage treatment works;
(13) Any materials that form excessive amounts of scum that may interfere with the operation of the sewage treatment works or cause undue additional labor in connection with its operation;
(14) Any liquid wastes containing dyes or other colors that cannot be removed by biological processes or that require special chemical treatment;
(15) Any waters or wastes that require excessive quantities of chlorine for stabilization in addition to biological treatment. The amount of excess demand will be determined by comparing the chlorine demand of the waste in question with the average chlorine demand of all other wastes entering the plant;
(16) Any waters or wastes containing radioactive waters or wastes in quantities that may prove injurious to the treatment process or any portion of the sewage treatment system or to persons, animals or plant life;
(17) Any substance which will cause the POTW to violate its NPDES and/or state disposal system permit or the receiving water quality standards;
(18) Any waters or wastes containing in excess of 30 milligrams per liter NH3; and/or
(19) Any wastewater containing in excess of the following limitations:
Constituent | Maximum Concentration for Average Day (mg/l) | Average of Daily Value of 30 Consecutive Days Shall not Exceed (mg/l) |
Constituent | Maximum Concentration for Average Day (mg/l) | Average of Daily Value of 30 Consecutive Days Shall not Exceed (mg/l) |
Antimony | 1.0 | 0.50 |
Arsenic | 0.10 | 0.10 |
Barium | 10.00 | 10.00 |
Boron | 0.50 | 0.50 |
Cadmium | 1.20 | 0.50 |
Chloroform | 1.00 | 1.00 |
Chromium | 7.00 | 2.50 |
Copper | 2.00 | 0.80 |
Cyanide | 0.80 | 0.23 |
Lead | 0.50 | 0.25 |
Mercury | 0.0005 | 0.0005 |
Nickel | 4.0 | 1.80 |
Phenol | 10.0 | 10.0 |
Selenium | 0.1 | 0.005 |
Silver | 1.20 | 0.50 |
Vanadium | 0.50 | 0.50 |
Zinc | 0.50 | 0.20 |
(B) When the Administrator determines that a user is violating any of the foregoing standards, he or she shall, in addition to other remedies available under § 18-104 of this chapter:
(1) Advise the user of the violation; and
(2) Develop effluent limitations for such user to correct the violation.
(2011 Code, § 18-157)