Pretreatment Profile

In 1981, North Olmsted implemented a Municipal Industrial Pretreatment Program (MIPP) per Federal and State Environmental Protection Agency requirements.  This program is under the direction of the Wastewater Treatment Plant Superintendent and is implemented by sufficient personnel committed to carrying out the activities of such a program.

The program is based on identification and classification of industrial and commercial facilities into one of three general categories: industrial users (IUs), significant industrial users (SIU), categorical industrial users (CIUs).

  • CIUs are defined as an industrial user subject to national categorical pretreatment standards.
  • SIUs are defined as users subject to categorical pretreatment standards under 40 CFR 403.6 and 40 CFR chapter I, subchapter N, except those designated as NSCIUs. Or any other IU that discharges an average of 25,000 gallons per day or more of process wastewater to the publicly owned treatment works (POTW) (excluding sanitary, noncontact cooling, and boiler blowdown wastewater); OR contributes a process waste stream that makes up 5 % or more of the average dry weather hydraulic or organic capacity of the POTW; Or is designated as such by the POTW on the basis that the SIU has a reasonable potential for adversely affecting the POTW’s operation.
  • IUs also called non-significant industrial users may also be regulated if their discharge has a responsible potential to upset the treatment plant, prevent the conveyance of wastewater to the treatment plant or causes an exceedance of the wastewaters plant’s NPDES permit.


Additional information on the Pretreatment program can be found in The City of North Olmsted Ordinances 911, 913, and 917. And

The pretreatment program provides the City of North Olmsted an efficient monitoring and enforcement tool that is used to protect the City’s sewer system, treatment plant, their workers and the surrounding environment from injury and/or disruption of biological processes caused by deleterious materials.

Public Notification

February 21, 2017-The City of North Olmsted has filed the Annual Pretreatment Report and Annual SSO report with OEPA in a timely manner. There were no violations for any Significant Industrial Users (SIU) for the calendar year of 2016.