(A) No person shall discharge or cause to be discharged any of the following to any public sanitary sewers under the jurisdiction of the town which may cause or contribute to a pass through or interference event to occur. These prohibitions apply to all users of the sewage works, whether or not the user is subject to national categorical pretreatment standards or any other federal, state, or local pretreatment standard or requirements. A user shall not discharge the following substances to the sewage works:
(1) Pollutants which create a fire or explosion hazard in the sewage works, including, but not limited to, wastestreams with a closed cup flashpoint of less than 140°F or 60°C using the test methods specified in 40 C.F.R. § 261.21;
(2) Solid or viscous pollutants in amounts which will cause obstruction to the flow in the sewage works resulting in interference;
(3) Subject to any other limitations or prohibitions contained within this subchapter, wastewater from any user that exceeds the concentrations below (hereafter referred to as surcharge limitations) may be accepted and the user may be subject to surcharges for concentrations greater than as listed below, in accordance with the terms of the town’s sewer rate ordinance (§§ 52.01 through 52.11), as amended:
Pollutant | mg/l | Sample Type |
Ammonia | 30 | Composite |
BOD5 | 240 | Composite |
Fats, wax, grease or oils, collectively, whether emulsified or not | 100 | Grab |
Phosphorus | 7 | Composite |
Total suspended solids (TSS) | 240 | Composite |
(4) Heat in amounts which will inhibit biological activity in the sewage works resulting in interference, but in no case heat in such quantities that the temperature at the sewage treatment plant exceeds 40°C (104°F);
(5) Petroleum oil, nonbiodegradable and biodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass through;
(6) Pollutants which result in the presence of toxic gases, vapors or fumes within the sewage works in a quantity that may cause acute worker health and safety problems;
(7) Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;
(8) Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant;
(9) Any waters or wastes having a pH lower than 6.0 or having any other corrosive property capable of causing damage or hazard to structure, equipment and personnel of the sewage works, or that interferes with any sewage treatment process;
(10) Solid or viscous substances, diluted or undiluted, in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastic, wood, underground garbage, blood, paunch, manure, hair and fleshings, entrails, paper, dishes, cups, cans, milk containers and the like, either whole or ground by garbage grinders;
(11) Any waters or wastes containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a hazard or toxic effect in the receiving waters of the sewage treatment plant, or to exceed the limitations set forth in the applicable Federal Categorical Pretreatment Standards or other pretreatment standards or regulations issued by USEPA or the IDEM. Toxic pollutants are those identified pursuant to § 307(a) of the Federal Water Pollution Control Act being 33 U.S.C. § 1317(a), as amended. In no case shall any user discharge any chemical, compound or substance in concentrations greater than 10% of the LD50 limit as listed on the most recent MSDS for that chemical, compound or substance; or
(12) Wastewater containing concentrations of the following enumerated pollutants exceeding the following limits (hereinafter referred to as local limitations):
Pollutant | Daily Maximum mg/l | Sample Type |
Pollutant | Daily Maximum mg/l | Sample Type |
Arsenic | 0.15 | Composite |
Cadmium | 0.33 | Composite |
Chromium (hexavalent) | 0.25 | Composite |
Chromium (total) | 2.50 | Composite |
Copper | 2.00 | Composite |
Cyanide (total) | 0.30 | Composite |
Lead | 0.33 | Composite |
Mercury | 0.0001 | Composite |
Nickel | 2.00 | Composite |
Phenols | 0.67 | Composite |
Selenium | 0.67 | Composite |
Silver | 0.20 | Composite |
Zinc | 2.50 | Composite |
(B) No person shall discharge or cause to be discharged any of the following into a public sanitary sewer under the jurisdiction of the town without a written permit from the Superintendent.
(1) In determining the acceptability of these wastes, the Superintendent will give consideration to the public sanitary sewers, nature of the sewage treatment process, capacity of the sewage treatment plant, and other pertinent factors.
(2) The substances prohibited are:
(a) Any liquid or vapor having a temperature higher than 150°F or 65°C;
(b) Any water or waste containing substances which may solidify or become viscous at temperatures between 32° and 150°F or 0° and 65°C;
(c) Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower or greater shall be subject to the review and approval of the Superintendent;
(d) Any waters or wastes containing acid iron pickling wastes or plating solutions whether neutralized or not;
(e) Any radioactive wastes;
(f) Any waters or wastes having a pH in excess of 9.0;
(g) Materials which exert or cause:
1. Unusual concentrations of inert suspended solids (such as, but not limited to, Fuller’s earth, lime slurries and lime residues) or of dissolved solids (such as, but not limited to, sodium chloride and sodium sulfate);
2. Excessive discoloration (such as, but not limited to, dye wastes and vegetable tanning solutions); or
3. Unusual volume of flow or concentration of wastes which constitute a “slug” as defined herein.
(h) Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharges to the receiving waters;
(i) Any trucked or hauled pollutants; or
(j) Any pollutant(s) that could otherwise cause pass through or interference.
(C) No user shall increase the use of potable water or process wastewater, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with a pretreatment requirement or standard.
(D) (1) If any waters or wastes are discharged, or are proposed to be discharged, to the public sanitary sewers, which waters contain the substances or possess the characteristics enumerated in divisions (A), (B) or (C) above as determined by the Superintendent, the Superintendent may:
(a) Require the submission of information on wastewater characteristics and obtain prior approval for such discharges from IDEM;
(b) Reject the wastes in whole or in part for any reason deemed appropriate by the town;
(c) Require pretreatment of such wastes to within the limits of normal sanitary sewage as defined or to within limits approved by IDEM;
(d) Require control of flow and equalization of such wastes so as to avoid any “slug” loads or excessive loads that may be harmful to the treatment works;
(e) Require payment of a surcharge on any excessive flows or loadings discharged to the treatment works to cover the additional costs of having capacity for and treating such wastes; and
(f) Require any other measures that the Superintendent or the Council has legal authority to require.
(2) If the Superintendent permits the pretreatment or equalization of waste flows, the design and installation of the plant and equipment shall be subject to the review and approval of the Council and subject to the requirements of all applicable laws, codes, ordinances and regulations.
(E) Where preliminary treatment or flow-equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at the owner’s expense.
(F) The Superintendent may require the owner of any property serviced by a building sewer to install a suitable control manhole, together with such necessary meters and other appurtenances in the building sewer, to facilitate observations, sampling and measurement of the wastes. Such manhole, when required, shall be accessible and safely located, and shall be constructed in accordance with plans approved by the Superintendent. The manhole shall be installed and maintained by the owner at the owner’s expense so as to be safe and accessible at all times. Agents of the town, the IDEM, and the USEPA shall be permitted to enter all properties for the purpose of inspection, observation, measurement, sampling and testing upon presentation of appropriate credentials and identification.
(G) The Superintendent may control through permit, order or similar means, the contribution to the sewage works by each user to ensure compliance with this subchapter, the town’s NPDES permit, and all other applicable standards and requirements. In the case of a significant industrial user (SIU), this control shall be achieved through an industrial wastewater pretreatment permit (IWP) issued by IDEM.
(H) All measurements, tests and analyses of the characteristics of water and wastes to which reference is made in this subchapter shall be determined in accordance with appropriate methodologies accepted and approved by USEPA, and shall be determined at the control manhole; provided, or upon suitable samples taken at said control manhole. Report thereof shall be provided to the Superintendent within five days after the results are received by the user. In the event that no special manhole’ has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sanitary sewer to the point at which the building sewer is connected. Sampling shall be carried out pursuant to USEPA accepted methods.
(I) It shall be unlawful for any person to place, deposit, discharge, permit to be deposited or discharged, in any manner whatsoever, any substance into a public sanitary sewer under the jurisdiction of the town at a point different than the proposed building sewer connection to the sanitary sewer system.
(J) No statement contained in this section shall be construed as preventing any separate agreement or arrangement between the town and any user whereby waste of unusual strength or character may be accepted by the town for treatment, subject to payment therefor, by the user, at such rates as are compatible with the sewer rate ordinance (§§ 52.01 through 52.11), so long as said agreement or arrangement does not directly or indirectly allow any discharge which will cause pass through or interference or in any way cause the town to violate the terms of its NPDES permit.
(Ord. 383, passed 12-6-1999; Ord. 383A, passed 12-19-2011; Ord. 596, passed 3-6-2017) Penalty, see § 52.99