Standard Industrial Discharge Permits

Industrial background with person in a hardhat, ear protection around neck and clipboard in hand.The Industrial Waste and Pollution Prevention (IWPP) section of the Metropolitan Council is the delegated Pretreatment Program authority for the seven-county Metro area. We regulate industrial wastewater discharges through a permitting system.  

Industries discharging wastewater into public sewers must apply for an industrial discharge permit unless IWPP determines that the wastewater has an insignificant impact on public sewers.  

Industrial Waste is defined as any solid, liquid, or gaseous waste, excluding domestic waste, resulting from any industrial, manufacturing, commercial, institutional or business activity, or from the development, recovery, or processing of a natural resource. 

To determine if your business generates industrial wastewater, you will need to complete and submit this survey of your business’s processes and waste. 

Wastewater Discharge Survey (Microsoft Word) 

Question mark in a bubble IconFor information and questions about your business’s wastewater, please contact Kristi Goble at  kristi.goble@metc.state.mn.us or at 651-602-8114. 

How industrial users must comply with the program and permit requirements 

Industries that we determine to require a Standard Industrial Discharge Permit must comply with our delegated pretreatment program by: 

Standard Permit Types 

IWPP issues different types of Standard Industrial Discharge Permits based on an industry’s operations and processes, as well as annual discharge volumes.  


Standard Industrial Discharge Permit types (PDF)  

All Standard permittees must demonstrate compliance with federal, state, and local pretreatment standards and requirements through self-monitoring and reporting by a Signatory Authority.  

Reporting and Self-Monitoring Requirements (PDF) 

All Standard permittees are subject to Local Pretreatment Standards (discharge limitations) and may also be subject to Federal Pretreatment Standards. 

Local and Federal Pretreatment Standards (PDF)  

Depending on the permit type and industry operations, one or more of the following documents may be required in a permit.

As the delegated pretreatment program authority for the seven-county Metro area, Met Council staff have the right to enter the premises of any industrial user to determine compliance with the Waste Discharge Rules for the Metropolitan Disposal System and any permit issued under the rules.   

IWPP – Who we are, right of access for inspection and monitoring (PDF) 

More Resources 

Connect With Us

Open Channel News  – A biannual news bulletin containing important pretreatment program information and news

Customer Workshops  – Annual workshops for industrial customers to provide input in the rate-setting process and to share ideas and concerns on pretreatment program issues that may affect their businesses.

IWPP Office:

651-602-4703
[email protected]

IWPP Mailing Address:

Met Council - IWPP 390 N. Robert St. St. Paul, MN 55101-1805

IWPP Staff:

Contact IWPP staff (PDF)
To receive important notifications regarding your Met Council industrial discharge permit, we recommend you add these emails to your address book: MCESIndustrialOnlineReporting@metc.state.mn.us and METC@public.govdelivery.com.