Columbus City Codes § 1147.01 Definitions.
1147.01 - Definitions.
For the purpose of this chapter, the meaning of the following terms shall be defined in this section:
(a) "Approved laboratory procedures" means the measurements, tests, and analyses of the characteristics of water and wastes in accordance with analytical procedures determined acceptable by Federal Guidelines as established in Title 40, Code of Federal Regulations, Part 136, or as approved by the Regional Administrator, U.S. Environmental Protection Agency.
(b) "Billing Charge" shall mean a fixed charge to recover the costs incurred to provide service whether or not any consumption is used. These may include the costs of producing and mailing utility bills, applying payment as it is received, providing customer support and service, and other related sewer system costs.
(c) "Commodity Charge" shall mean a sewer use charge that varies in the amount with the level of water the customer actually uses. This charge recovers the operating and maintenance costs associated with treating wastewater to clean water standards, providing the collection system to convey wastewater, and recovers the cost of system capital improvements. The charge includes an Operating and Maintenance charge, a Capital charge, Sewer Maintenance charge, and Industry Specific charge.
(d) "Biochemical Oxygen Demand" has the same meaning as in Columbus City Codes Section 1145.02.
(e) "Chemical Oxygen Demand" has the same meaning as in Columbus City Codes Section 1145.02.
(f) "Contracted reserve capacity" means that portion of the unused system design capacity which has been retained by contract for future use by a user.
(g) "Cooling water" means the clean wastewater discharged from any heat transfer system such as condensation, air conditioning, cooling or refrigeration.
(h) "Director" means the director of Columbus Water & Power, City of Columbus.
(i) "Discharge" means the disposal of sewage, water or any liquid from any sewer user into the Columbus sewerage system.
(j) "Domestic waste" means any discharge to the sewer system that has strength characteristics which do not exceed 250 mg/l of BOD, 450 mg/L of COD, 145 mg/L of TOC, 300 mg/l of suspended solids and 40 mg/l of TKN.
(k) "Industrial process" means any activity where materials are received and are altered by one or more internal operations and then dispatched in the altered form.
(l) "Industrial user" means any nongovernmental user of the Columbus sewerage system identified in the Standard Industrial Classification Manual, 1972 edition, classified in Division A, B, D, E or I, that discharges wastewater from an industrial process, and the total wastewater discharged is not primarily non-process domestic waste.
(m) "Maintenance" means keeping the POTW in a state of repair and shall include expenditures necessary to maintain the capacity (capability) for which said works were designed and constructed.
(n) "Major contributor" means any wastewater contributor identified in the Standard Industrial Classification Manual (SIC) in any of Division A, B, D, E and I that: (1) Has a discharge flow of 50,000 gallons or more per average work day (if seasonal, the average shall be computed on the period of use); or (2) Has a flow or pollutant loading greater than five percent of the design capacity of the POTW; or (3) Has in its wastes toxic pollutants in toxic amounts as defined in the standards issued under Section 307(a) of the Federal Water Pollution Control Act Amendments of 1972; or (4) Is found by the director to have significant impact, either singly or in combination with other contributing industries, on the POTW or upon the quality of effluent from the POTW.
(o) "Phosphorus" means total phosphorus content in wastewater as determined by approved laboratory procedures.
(p) "Primarily non-process domestic waste" means that at least ninety (90) percent of all wastewater contributed is attributable to sanitary conveniences.
(q) "Proportionate" means that each unit has the same relationship to the total with respect to magnitude, quantity and degree.
(r) "Replacement" means those expenditures made for obtaining and installing equipment, accessories and/or appurtenances during the useful life of the POTW which are necessary to maintain the capacity and performance of the POTW for which they were designed and constructed.
(s) "Sewerage charge" means the aggregate of the appropriate user charges and local capital cost charges.
(t) "Sewerage system" means all of the facilities required to transport sewage from the premises of the source to a water reclamation plant and shall include the treatment and disposal facility. All such facilities of the City of Columbus shall be considered to be one such sewerage system.
(u) "Significant user" means a user who contributes ten (10) percent or greater of the system design flow or system design for pollutant loadings.
(v) "Standard Industrial Classification" means a coded classification of industries based upon economic activity developed by the U.S. Department of Commerce as published in the current Standard Industrial Classification Manual published by the U.S. Government Printing Office.
(w) "Standard Strength" has the same meaning as in Columbus City Codes Section 1145.02.
(x) "Total suspended solids (total nonfilterable) residue" has the same meaning as in Columbus City Codes Section 1145.02.
(y) "System design capacity" means the design capacity for normal domestic wastewater as established by accepted engineering standards.
(z) "Total organic carbon" has the same meaning as in Columbus City Codes Section 1145.02.
(aa) "Service load" means total billed load as determined by calculating the non-extra strength billed flows times standard strength pounds plus established extra strength flow and loadings.
(ab) "Treatment parameter" means a fundamental characteristic of sewage around which treatment is designed, such as, but not limited to flow, BOD, suspended solids and phosphorus.
(ac) "User" means any person, lot, parcel of land, building, premises, municipal corporation or other political subdivision that discharges, causes or permits the discharge of wastewater into the city sewerage system.
(ad) "Scavenger wastes" means liquid waste materials such as wastes from septic tanks, portable toilets, sewage holding tanks, grit waste and industrial processes which are usually collected at the source by tank truck for disposal elsewhere.
(ae) "Industrial wastewater" has the same meaning as in Columbus City Codes Section 1145.02.
(af) "NPDES Permit" means the conditions and limits set forth by the NPDES on the City of Columbus, division of water reclamation for discharging water reclamation plant effluent into public waters.
(ag) "Debt service charge" means the portion of a user's bill that is used to offset the principal and interest payments on outstanding debt of the division of water reclamation.
(ah) "Operations and Maintenance (O&M)" means the organized procedure for causing a piece of equipment, a water reclamation plant, or other facility or system to perform its intended function and to keep these units in such condition that it is able to continually and reliably perform its intended function.
(ai) "Residential user class" means all users who discharge sewage from a structure of human occupancy.
(aj) "Commercial user class" means all users who discharge sewage from a non-industrial business establishment.
(ak) "Governmental user class" means all users who discharge sewage from a property owned by a local, state or federal governmental entity.
(al) "Institutional user class" means all users who discharge sewage from a school, church or hospital.
(am) "User charges" means the operation, maintenance and replacement cost of the division of water reclamation.
(an) "Total Kjeldahl Nitrogen" has the same meaning as in Columbus City Codes Section 1145.02.
(ao) "Sewer service outside the city" means sewer service furnished to consumers in contract areas or sewer authorized by the Director of Columbus Water & Power for consumers in non-contract areas.
(ap) "Non-contract areas" means areas outside the city provided with sewer service by the city where no contract exists with a political subdivision.
(aq) "Wet Weather Charge" - A charge based upon the Equivalent Residential Unit to recover costs of construction of projects necessary to meet the requirements of consent orders that mandate elimination of wet weather flow from Combined Sewer Overflows and Sanitary Sewer Overflows. This charge recovers debt service costs and other expense of all projects related to correcting wet weather overflows.
(ar) "Equivalent Residential Unit" (ERU) - Each ERU is based on two thousand (2,000) square feet of impervious surface area. Residential customers are assigned one (1) ERU per residence. All other customers are charged based on measured impervious area divided by two thousand (2,000) square feet to determine an ERU equivalent. The maximum per customer charge based on calculated ERUs is one thousand (1,000).
(as) "Eligible senior customers" means any customer who (a) is receiving service by means of a single meter to a single-family residence; (b) is personally responsible for payment of the bill as head of household; and (c) is sixty (60) years of age or older having a total income of less than two hundred (200) percent of the poverty level as published by the U.S. Department of Commerce, Bureau of Census.
(at) "Significant industrial user" has the same meaning as in Columbus City Codes Section 1145.02.
(au) "POTW" or "publicly owned treatment works" means a treatment works owned by the City of Columbus as defined by Section 212 of the Clean Water Act (33 U.S.C Section 1292). This definition includes any devices and systems used in the collection, storage, treatment, recycling and reclamation of sewage or industrial wastes of a liquid nature, including sewers, pipes and other conveyances that convey wastewater to a POTW water reclamation plant.
(Ord. 2616-87; Ord. No. 1595-2009, §§ 2, 5, 2-1-2010; Ord. No. 2635-2014, § 5, 12-7-2015, eff. 2-1-2016; Ord. No. 0329-2019, § 5, 2-11-2019; Ord. No. 3037-2022, § 2, 11-21-2022; Ord. No. 1730-2024, § 2, 7-1-2024; Ord. No. 2837-2024, § 3, 11-25-2024; Ord. No. 1682-2025, §§ 3, 4, 6-30-2025; Ord. No. 1882-2026, § 1, 6-29-2026)
