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 Nicholasville
 Code of Ordinances
 Chapter 23. UTILITIES*
 Article IV. WATER SERVICE*
 Division 3. PRETREATMENT REGULATIONS*

  § 23-112. Specific pollutants limitations.  

Latest version.
  • The city has received authority through the U.S. EPA and state statutes to enforce the requirements of 40 CFR Chapter I Subchapter N, Parts 405-471 and 40 CFR Part 403. All users shall comply with the requirements of those regulations. The WWTP superintendent and/or his designee may develop best management practices (BMPs), by ordinance or in individual wastewater discharge permits to implement local limits and the requirements of this division. The WWTP superintendent is authorized to establish local limits pursuant to 40 CFR 403.5(c). All significant industrial users must comply with these discharge limitations where they are more stringent than applicable state and federal regulations. The following limitations are established for characteristics of any wastewater to be discharged into the public sewer system:
    Parameter
    24-Hr. Max. Concentration Shall Not Exceed (mg/l)
    General
    pH (Std. Units)
    5-10.5
    Oil & Grease, total
    100
    Oil & Grease, Hydrocarbon
    25
    Phosphorus, total
    Report
    Arsenic, total
    0.13
    Cadmium, total
    0.07
    Chromium, total
    2.77
    Chromium, hexavalent
    0.66
    Copper, total
    0.96
    Cyanide, Amenable
    0.33
    Lead, total
    .018
    Mercury, total
    1,000 ng/l
    Molybdenum, total
    0.36
    Nickel, total
    0.84
    Selenium, total
    0.20
    Silver, total
    0.16
    Zinc, total
    1.59
    (Ord. No. 045-1989, § 2.4, 11-28-89; Ord. No. 778-2010, 3-22-10; Ord. No. 823-2012, 1-23-12; Ord. No. 999-2017, 12-4-17)