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Pretreatment Program

Butler County’s wastewater treatment plants are designed to handle domestic wastewater from typical households, not the industrial wastes from a factory or business. Wastewater discharged from an industry may contain pollutants that could interfere with the operation of the county's treatment plants. BCWS began the industrial pretreatment program to help control the wastewater flow coming into the treatment facilities.

Certain customers, often known as Significant Industrial Users (SIUs), must be permitted under the industrial pretreatment program. SIUs must also control the quality of their discharge by installing appropriate systems that will “pretreat” their wastewater prior to discharging into the sewer system. BCWS regulates this program through wastewater sampling and on-site inspections of commercial and industrial facilities.

Learn more about the USEPA's Federal Pretreatment Program requirements and guidelines.

Program Goals

The Industrial Pretreatment program is a federally mandated program under the Clean Water Act, which controls the discharges of commercial and industrial facilities.

The goals of the program are:

  • Prevent the introduction of pollutants into our treatment plants that will interfere with treatment operations
  • Prevent the introduction of pollutants into our treatment plants that cannot be treated and will pass through the plant and into the environment
  • Generally reduce the health and environmental risk of pollution