A. 
Clarification of word usage: "Shall" is mandatory; "may" is permissive.
B. 
Unless the context specifically indicates otherwise, the meaning of terms used in this chapter shall be as follows:
ADMINISTRATOR
The Administrator of the United States Environmental Protection Agency.
APPROVING AUTHORITY
The City of Waverly or its designee.
BASIC USER CHARGE
The basic assessment levied on all users of the public sewer system.
BOD (denoting "BIOCHEMICAL OXYGEN DEMAND")
The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure in five days at 20° C., expressed in milligrams per liter.
BUILDING DRAIN
That part of the lowest piping of a drainage system which receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building sewer or other approved point of discharge, beginning five feet (1.5 meters) outside the inner face of the building wall.
BUILDING SEWER
The extension from the building drain to the public sewer or other place of disposal.
CAPITAL IMPROVEMENT CHARGE
A charge levied on users to improve, extend or reconstruct the sewage treatment works.
CITY
The City of Waverly.
COMBINED SEWER
A sewer which is designed and intended to receive wastewater, storm, surface and groundwater drainage.
COMMERCIAL USER
Includes transit lodging, retail and wholesale establishments or places engaged in selling merchandise, or rendering services.
CONTROL MANHOLE
A structure located on a site from which industrial wastes are discharged. Where feasible, the manhole shall have an interior drop. The purpose of a control manhole is to provide access for the City of Waverly's representative to sample and/or measure discharges.
DEBT SERVICE CHARGE
The amount to be paid each billing period for payment of interest, principal and coverage of loan, bond, etc. outstanding.
DIRECTOR
The Director of the Illinois Environmental Protection Agency.
EASEMENT
An acquired legal right for the specific use of land owned by others.
EFFLUENT CRITERIA
As defined in any applicable NPDES permit.
FEDERAL ACT
The Federal Clean Water Act (33 U.S.C. § 466 et seq), as amended (Pub. L. 95-217).
FEDERAL GRANT
The United States government participation in the financing of the construction of treatment works as provided for by Title II, Grants for Construction of Treatment Works, of the Act and implementing regulations.
FLOATABLE OIL
Oil, fat, or grease in a physical state such that it will separate by gravity from wastewater by treatment in an approved pretreatment facility. A wastewater shall be considered free of floatable fat if it is properly pretreated and the wastewater does not interfere with the collection system.
GARBAGE
Solid wastes from the domestic and commercial preparation, cooking, and dispensing of food, and from the handling, storage and sale of food.
INDUSTRIAL USERS
Includes establishments engaged in manufacturing activities involving the mechanical or chemical transformation of materials or substance into products.
INDUSTRIAL WASTE
Any solid, liquid or gaseous substance discharged, permitted to flow or escaping from any industrial, manufacturing, commercial or business establishment or process or from the development, recovery or processing of any natural resource, as distinct from sanitary sewage.
INSTITUTIONAL/GOVERNMENTAL USE
Includes schools, churches, penal institutions, and users associated with federal, state, and local governments.
LOCAL CAPITAL COST CHARGE
Charges for costs other than the operation, maintenance and replacement costs; i.e., debt service and capital improvement costs.
MAJOR CONTRIBUTING INDUSTRY
An industrial user of the publicly owned treatment works that:
(1) 
Has a flow of 50,000 gallons or more per average work day; or
(2) 
Has a flow greater than 10% of the flow carried by the municipal system receiving the waste; or
(3) 
Has in its waste a toxic pollutant in toxic amounts as defined in standards issued under Section 307(a) of the Federal Act; or
(4) 
Is found by the permit-issuing authority, in connection with the issuance of the NPDES permit to the publicly owned treatment works receiving the waste, to have significant impact, either singly or in combination with other contributing industries, on that treatment works or upon the quality of effluent from that treatment works.
MILLIGRAMS PER LITER
A unit of the concentration of water or wastewater constituent. It is 0.001 gram of the constituent in 1,000 milliliters of water. It has replaced the unit formerly used commonly, parts per million, to which it is approximately equivalent, in reporting the results of water and wastewater analysis.
NATURAL OUTLET
Any outlet into a watercourse, pond, ditch, lake, or other body of surface water or groundwater.
NPDES PERMIT
Any permit or equivalent document or requirements issued by the Administrator or, where appropriate, by the Director, after enactment of the Federal Clean Water Act to regulate the discharge of pollutants pursuant to Section 402 of the Federal Act.
PERSON
Any and all persons, natural or artificial, including any individual, firm, company, municipal or private corporation, association, society, institution, enterprise, governmental agency or other entity.
pH
The logarithm (base 10) of the reciprocal of the hydrogen-ion concentration expressed by one of the procedures outlined in the IEPA Division of Laboratories Manual of Laboratory Methods.
POPULATION EQUIVALENT
A term used to evaluate the impact of industrial or other waste on a treatment works or stream. One population equivalent is 100 gallons of sewage per day, containing 0.17 pound of BOD and 0.22 pound of suspended solids.
PPM
Parts per million by weight.
PRETREATMENT
The treatment of wastewaters from sources before introduction into the wastewater treatment works.
PROPERLY SHREDDED GARBAGE
The wastes from the preparation, cooking, and dispensing of food that have been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than 1/2 inch (1.27 centimeters) in any dimension.
PUBLIC SEWER
A sewer provided by or subject to the jurisdiction of the City of Waverly. It shall also include sewers within or outside the City's corporate limits that serve one or more persons and ultimately discharge into the City's sanitary sewers, even though those sewers may not have been constructed with City funds.
REPLACEMENT
Expenditures for obtaining and installing equipment, accessories, or appurtenances which are necessary during the useful life of the treatment works to maintain the capacity and performance for which such works were designed and constructed. The term "operation and maintenance" includes replacement.
RESIDENTIAL USER
All dwelling units such as houses, mobile homes, apartments, and permanent multifamily dwellings.
SANITARY SEWER
A sewer that conveys sewage or industrial wastes, or a combination of both, and into which stormwater, surface water, and groundwaters or polluted industrial wastes are not intentionally admitted.
SEWAGE
Used interchangeably with "wastewater."
SEWER
A pipe or conduit for conveying sewage or any other waste liquids, including stormwater, surface water, and groundwater drainage.
SEWERAGE
The system of sewers and appurtenances for the collection, transportation and pumping of sewage.
SEWERAGE FUND
The principal accounting designation for all revenues received in the operation of the sewerage system.
SLUG
Any discharge of water, sewage or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration longer than 15 minutes more than five times the average twenty-four-hour concentration or flows during normal operation.
STATE ACT
The Illinois Anti-Pollution Bond Act of 1970 (30 ILCS 405/1 et seq.).
STATE GRANT
The State of Illinois participation in the financing of the construction of treatment works as provided for by the Illinois Anti-Pollution Bond Act (30 ILCS 405/1 et seq.) and for making such grants as filed with the Secretary of State of the State of Illinois.
STORM SEWER
A sewer that carries stormwater, surface water and groundwater drainage but excludes sewage and industrial wastes other than unpolluted cooling water.
STORMWATER RUNOFF
That portion of the precipitation that is drained into the sewers.
SURCHARGE
The assessment in addition to the basic user charge and debt service charge which is levied on those persons whose wastes are greater in strength than the concentration values established in § 247-10.
SUSPENDED SOLIDS (SS)
Solids that either float on the surface of or are in suspension in water, sewage, or industrial waste, and which are removable by a laboratory filtration device. Quantitative determination of suspended solids shall be made in accordance with procedures set forth in the IEPA Division of Laboratories Manual of Laboratory Methods.
UNPOLLUTED WATER
Water quality equal to or better than the effluent criteria in effect or water that would not cause a violation of receiving water quality standards and would not be benefited by discharge to the sanitary sewers and wastewater treatment facilities provided.
USEFUL LIFE
The estimated period during which the collection system and/or treatment works will be operated.
USER CHARGE
A charge levied on users of treatment works for the cost of operation, maintenance and replacement.
USER CLASS
The type of user, "residential, institutional/governmental, commercial" or "industrial," as defined herein.
WASTEWATER
The spent water or a community. From this standpoint, of course, it may be a combination of the liquid and water-carried wastes from residences, commercial buildings, industrial plants, and institutions, together with any groundwater, surface water, and stormwater that may be present.
WASTEWATER FACILITIES
The structures, equipment, and processes required to collect, carry away, and treat domestic and industrial wastes and transport effluent to a watercourse.
WASTEWATER SERVICE CHARGE
The charge per quarter or month levied on all users of the wastewater facilities. The service charge shall be computed as outlined in § 247-10 and shall consist of the total of the basic user charge, the local capital cost and a surcharge, if applicable.
WASTEWATER TREATMENT WORKS
An arrangement of devices and structures for treating wastewater, industrial wastes, and sludge, sometimes used as synonymous with "waste treatment plant" or "wastewater treatment plant" or "pollution control plant."
WATER QUALITY STANDARDS
Defined in the Water Pollution Regulations of Illinois.
WATERCOURSE
A channel in which a flow of water occurs, either continuously or intermittently.