Pretreatment Standards and Limits

Federal, state, and local regulations require Publicly Owned Treatment Works (POTWs) to establish local discharge limits for various pollutants. Information regarding federal categorical standards, limits, and other pretreatment regulations can be found at the USEPA Pretreatment Standards & Limits and USEPA Subchapter N web sites. Also, information on these topics can be found at the Ohio Revised Code Section 3745-3 site ORC 3745-3. These regulations, among other things, require that strict discharge prohibitions be established for certain harmful or dangerous pollutants and materials. These prohibited wastes are defined in Section 925.05(a) of the City’s Sewer Use Code. The general local limits applying to all sewer discharges to the sanitary sewer system are set forth in Section 925.05(b)(3) while site-specific local limits applying to permitted sewer users are covered in Section 925.05(b)(3)(A) of the Code. Also, Section 925.05(b)(1) of the Sewer Use Code covers categorical standards for those industries covered by federal categorical standards.

The general local limits applying to sewer users served by the City of Defiance sewer system are as follows:

*Narrative Limit "Best Management Practices"

Further information regarding pretreatment limits, standards, and requirements can be obtained at the federal EPA web sites USEPA Pretreatment Overview and USEPA Standards & Limits, the OEPA Pretreatment site, or from the US Code of Federal Regulations Section 403.