Sec. 24-20. Definition of terms.
In addition to the definitions contained in section 24-1, the following definitions shall apply:
   Annual wastewater budget shall mean the amount budgeted in any one (1) fiscal year by the city and county for the total operation, maintenance, repair and replacement cost of the joint wastewater system.
   Average discharge volume shall mean total wastewater discharge for a residential user class divided by the number of users in the class.
   Average user fee shall mean a user fee based upon the average discharge volume of a residential user class.
   BOD (biochemical oxygen demand) shall mean the organic material in domestic or industrial wastewaters measured by the oxygen utilized over a period of five (5) days at twenty degrees Celsius (200C), determined by procedures in "Standard Methods."
   Building drain shall mean that part of the lowest horizontal 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, beginning five (5) feet (1.5 meters) outside the inner face of the building wall.
   Building sewer shall mean a sewer connecting a drain to a public sewer or other place of disposal. Also called "house connection" and "industrial connection sewer."
   COD (chemical oxygen demand) shall mean the chemically oxidizable material in wastewater as represented by the reduction of chromate ion, measured in accordance with "Standard Methods."
   Domestic wastewater shall mean water-carried wastes produced by noncommercial and nonindustrial activities which result from normal human living processes.
   Effluent shall mean the liquid outflow of any facility used to treat, convey or retain wastewater.
   Engineering estimate shall mean an estimate by the city engineering staff using the best available data, judgment and experience.
   House connection sewer shall mean a sewer connecting a building drain to a public sewer for the purpose of conveying domestic wastewater. Also called "building sewer."
   Industrial connection sewer shall mean a sewer connecting a building sewer or building waste drainage system to the public sewer for the purpose of conveying industrial wastewater.
   Industrial wastewater shall mean all wastewater of the community except domestic wastewater and uncontaminated water; it includes all wastewater from any producing, manufacturing, processing, institutional, commercial, agricultural or other operation where the wastewater discharged contains significant quantities of waste of nonhuman origin.
   Inspector shall mean a person authorized by the director to inspect wastewater generation, conveyance, processing and disposal facilities.
   Joint wastewater system shall mean the combined sewerage systems and waste treatment works of the city and county.
   Mayor and council means the governing body of the city.
   Milligrams per liter (mg/l) shall mean the same as parts per million by weight.
   Parts per million (ppm) shall mean a weight-to-weight ratio; the parts per million value multiplied by the factor 8.345 shall be equivalent to pounds per million gallons of water.
   pH is defined as the logarithm (base 10) of the reciprocal of the hydrogen ion concentration expressed in moles per liter. Determined by procedures in "Standard Methods."
   Pretreatment shall mean the treatment of wastewater from a source before introduction into the wastewater system.
Private water company shall refer to a company, irrigation district or water cooperative that provides water to users.
   Private well shall mean a water well not owned by the city, or a private water company.
   Public sewer shall mean a common sewer controlled by a governmental agency or public utility.
   Radioactive material is defined as material containing chemical elements that spontaneously change their atomic structure by emitting any particles, rays or energy forms.
   Residential user shall mean one discharging domestic wastewater from a dwelling unit and includes, but is not limited to, persons residing in single-family dwellings, apartments, condominiums, townhouses and mobile homes regardless of whether the mobile home is located on a separate residential lot or within a mobile home park.
   Residential user class refers to a grouping of residential users having similar per unit monthly discharge quantities and residing in the same type of dwelling unit.
   Sanitary sewer is defined as a sewer for conveyance of sewage or industrial wastes, and into which there is no intentional admission of stormwaters, surfacewaters and groundwaters or unpolluted industrial wastes.
   Solid waste shall mean waste normally considered suitable for disposal at sanitary landfills.
   Standard Methods refers to the most recent edition of "Standard Methods for the Examination of Water and Wastewater," published jointly by the American Public Health Association, the American Water Works Association, and the Water Pollution Control Federation.
   Storm sewer shall mean a sewer that carries stormwater, surfacewater and groundwater drainage but excludes sewage and industrial wastes.
   Stormwater runoff shall mean rainfall that is drained into the storm sewers.
   Strength is defined as the relative difficulty of treatment of wastewater, expressed in terms of chemical oxygen demand (COD) and suspended solids.
   Suspended solids refers to solids that float on or are suspended in water, sewage or industrial wastes, and which are removable by a laboratory filtration device. Quantitative determination of suspended solids shall be made by procedures in "Standard Methods."
   User shall mean one who discharges wastewater to the joint wastewater system.
   User class shall mean a grouping of users having similar discharge strength, conducting a similar business, or living in the same dwelling unit type.
   User fee shall mean the basic monthly charge levied on users of the public sewer system.
   Wastewater is defined as liquid discharge resulting from the use of water for domestic, commercial or industrial purposes.
   Watercourse is defined as a natural or artificial channel in which water flows continuously or intermittently.
(Ord. No. 4376, § 2, 9275; Ord. No. 4527, §§ 1--3, 6-28-76; Ord. No. 4594, § 7, 11-22-76)