Illinois Pretreatment Standards regulations & environmental compliance analysis

Illinois Pretreatment Standards: What you need to know

Governing Law and Regulations

Pretreatment standards: 415 Illinois Compiled Statutes (ILCS) 5/13.3 to 5/13.5

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Illinois pretreatment program: 35 Illinois Administrative Code (IAC) 310.101 to 310.930

Sewer discharge criteria: 35 IAC 307.1001 to 307.8110

Annual POTW reports: 35 IAC 310.612

Regulatory Agencies

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

Illinois Environmental Protection Agency (IEPA) Bureau of Water

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Illinois has pretreatment regulations that mirror the federal requirements. While the Illinois Environmental Protection Agency (IEPA) is currently authorized by the EPA to administer the National Pollution Discharge Elimination System (NPDES) program, it does not have authority to oversee the pretreatment portion in Illinois.

Administration and enforcement. U.S. Environmental Protection Agency (EPA) Region 5 has primary responsibility for administering the Illinois pretreatment program. It functions as the approval authority and must review and approve the technical justification for local limits before local limits are incorporated into sewer use ordinances or industrial user control documents.

State Requirements

ILLINOIS PRETREATMENT PROGRAM

415 ILCS 5/13.4 and 35 IAC 310.101 to 310.930

Illinois has adopted federal general and categorical pretreatment standards applicable to existing and new nondomestic sources that discharge to publicly owned treatment works (POTW). Industrial users must follow pretreatment standards and obtain a pretreatment permit from EPA Region 5. Once a POTW receives approval to administer the program, that POTW may issue authorizations to discharge, which are similar to permits.

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