(A) No person shall discharge or deposit any of the following materials, waste materials, wastes, gases or liquids into any sewer forming part of the sanitary sewerage system, except where these may constitute occasional, intermittent inclusions in the wastewaters discharged from residential premises:
(1) Any waste, liquid or vapor, at a temperature exceeding 40°C (104°F) or at lower temperatures that will create hazardous conditions within, or cause deterioration of, the sanitary sewers;
(2) Any water or waste containing more than 50 milligrams per liter of petroleum substances, non-biodegradable cutting oils, or products of mineral origin;
(3) Wastewater containing oil, fat or grease (exclusive of petroleum substances) of concentrations greater than 100 milligrams per liter, whether emulsified or not, or containing substances which may solidify or become viscous at temperatures between 0°F and 65°F at the point of discharge into the system;
(4) (a) Any garbage that has not been properly shredded; and
(b) Properly shredded garbage shall not exceed one-half inch in any dimension.
(5) Any waters or wastes having a stabilized pH lower than 5.5 or higher than 10.0 or having any other corrosive property capable of either causing damage or creating a hazard to structures, equipment or personnel of the sanitary sewerage system and wastewater treatment facilities or interfering with proper operation of the town's wastewater treatment facilities;
(6) Any waters or wastes having a color which is not removable by the existing wastewater treatment plant processes and causes the plant effluent to exceed color requirements for discharge to the receiving waters;
(7) Any water or waste having a BOD5 in excess of 350 milligrams per liter unless identified as an industrial waste for billing purposes;
(8) Any water or waste having a total suspended solids (TSS) concentration in excess of 350 milligrams per liter unless identified as an industrial waste for billing purposes; and/or
(9) Any water or waste having an ammonia (NH3) concentration in excess of 30 milligrams per liter unless identified as an industrial waste for billing purposes.
(B) No person shall discharge or deposit any of the following materials, waste materials, waste gases or liquids into any sewer forming part of the sanitary sewerage system:
(1) Any gasoline, benzene, naphtha or other hydrocarbon solvents or oils, or other flammable or explosive liquids, solids or gases including any waters or wastes which contain, at the point of discharge to the sewer system, explosive elements so that any single reading on an explosion hazard meter exceeds 10% of the lower explosive limit (LEL) or any two successive readings that exceed 50% of the LEL;
(2) Any other solid or viscous substance in quantity or character capable of causing obstruction to flow in sewers or interference with proper operation of wastewater treatment facilities, such as, but not limited to ashes, cinders, ceramic wastes, paper products, sand, mud, straw, shavings, thread, glass, rags, metal, feathers, bones, tar, plastics, wood, paunch manure, insulation materials, fibers of any kind, stock or poultry feeds, processed grains, viscera or other fleshy particles from processing or packing plants, lime or similar sludges;
(3) Any noxious or malodorous gas or any substance capable of creating a public nuisance when introduced into the sewerage system; and/or
(4) Any unpolluted wastewater, as defined in § 52.001.
(C) Unpolluted wastewater may be discharged to the town's storm sewer system provided that the discharge is in complete accordance with state and federal laws.
(D) No person shall discharge into any sewer forming part of the sanitary sewerage system, any of the following materials in concentrations exceeding the stated limits:
(1) (a) Any toxic or poisonous substance; or
(b) Any other materials in sufficient quantity to injure or interfere with the wastewater treatment processes, or to constitute a hazard to humans or animals, or to cause a violation of the water quality standards or effluent standards for the stream or watercourse receiving the effluent from the town sewer system.
(2) (a) Concentrations of heavy metals and other incompatible pollutants in the discharge of any user of the sanitary sewerage system shall not exceed values listed below.
(b) All values are in milligrams per liter.
Metal/Pollutant | Amount |
Metal/Pollutant | Amount |
Chromium, hexavalent | 0.1 |
Chromium, total | 0.5 |
Copper | 0.5 |
Cyanide, total | 0.5 |
Cyanide, amenable | 0.1 |
Lead | 0.5 |
Nickel | 0.5 |
Zinc | 0.5 |
(3) (a) In the event of conflicts between values established in this regulation and values established by applicable state or federal rules, regulations, laws and the like, the more stringent value shall apply.
(b) Effluent limits contained in the NPDES permit and water quality standards assigned to the receiving stream shall at no time be exceeded or contravened as a result of discharges to the town's sewer system either within or without the values established in this section.
(4) Any radioactive isotope in concentration greater than that permitted by the latest effective regulations promulgated under applicable federal law.
(Ord. passed 5-13-2002) Penalty, see § 52.999