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Wastewater Variances

National Summary

The Clean Water Act (CWA) provides for modifications of its wastewater discharge standards in exceptional cases. These modifications are called variances. Facilities discharging wastewater may request variances from general industry pretreatment standards for discharges into publicly owned treatment works (POTW) or from NPDES effluent limitations for discharges from individual facilities. Specific effluent and discharge standards have to be met by an applicant before EPA will grant a variance.

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Type	Title	Date	State
Guidance Documents	Advance Concurrence of AA for FDF and Section 301(g) variances		National
Notices	Agency Information Collection Activities; National Wastewater Operator Training and Technical Assistance Program	09/27/2004	National
Notices	Agency Information Collection Activities; Submission of EPA ICR No. 0029.08 (OMB No. 2040-0068) to OMB for Review and Approval; Comment Request	04/24/2003	National
Notices	Clean Water Act Section 303(d): Availability of List Decisions	11/05/2007	National
Guidance Documents	Draft Guidance for Application and Review of Section 301(c) Variance Requests		National
Guidance Documents	Fundamentally Different Factors Variances for Iron and Steel Factories		National
Guidance Documents	Interim Economic Guidance for Water Quality Standards Workbook		National
Guidance Documents	Legal Opinion: Eligibility for Variance under Section 301(i)(1) of the Clean Water Act		National
Forms	Suggested Format for Submitting Modifications to an NOI for Stormwater Discharges Associated with Construction Activity		National
Forms	Suggested Format For Submitting Modifications to an NOI for Stormwater Discharges Associated with Industrial Activity		National
Guidance Documents	Technical Guidance for the Regulations Promulgated Pursuant to Section 301(g) fo CWA and 40 CFR Part 125		National
Guidance Documents	Variances to Permit Requirements and Other Regulatory Considerations		National
Regulatory Analysis	Wastewater Variances		National