Ohio Pretreatment Standards regulations & environmental compliance analysis

Ohio Pretreatment Standards: What you need to know

Governing Law and Regulations

Pretreatment program requirements: Ohio Administrative Code (OAC) 3745-3-01 to 3745-3-09

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Applicability: OAC 3745-3-02 and OAC 3745-3-03

Prohibited discharges: OAC 3745-3-04(B)

Indirect discharge permits: OAC 3745-36-01 to 3745-36-06

Reporting requirements: OAC 3745-3-06

Regulatory Agencies

Ohio Environmental Protection Agency (OEPA) Division of Surface Water Pretreatment Unit

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Ohio's comprehensive pretreatment regulations for industrial users that discharge their waste into publicly owned treatment works (POTW) generally follow the federal standards, with stricter state rules. OEPA has been granted approval by EPA to administer the federal Pretreatment Program under the National Pollutant Discharge Elimination System (NPDES) permit program. OEPA delegates program responsibilities to local governments, but also directly regulates industries through indirect discharge permits when local government is unable to perform the role effectively or is mandated to have an approved pretreatment program.

Administration and enforcement. OEPA's Pretreatment Unit is responsible for implementing the pretreatment program. OEPA oversees both local pretreatment programs and directly administers the permit program for industrial users discharging into nonapproved POTWs.

State Requirements


OAC 3745-3-02 and OAC 3745-3-03

Ohio's regulations apply to all industrial sources that discharge into POTWs, regardless of whether other federal, state, or local pretreatment ...

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