About Region 8's NPDES Permit Program

• Who issues permits in Region 8?
• Applying for a permit in Region 8
• Pretreatment in Region 8
• Whole Effluent Toxicity (WET) reporting

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Who issues NPDES permits in Region 8?

EPA Region 8 serves Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming. The NPDES permitting authorities for states and tribes within Region 8 are listed below.

Colorado

EPA issues NPDES permits on tribal lands and federal facilities in Colorado. EPA has delegated authority to issue other NPDES permits to the Colorado Dept. of Public Health & Environment.

• Find EPA-issued permits in Colorado
• For state-issued permits, visit the Colorado Dept. of Public Health & Environment Water Quality Permits Program 

Montana

EPA issues NPDES permits on tribal lands in Montana. EPA has delegated authority to issue other NPDES permits to the Montana Dept. of Environmental Quality.

• Find EPA-issued permits in Montana
• For state-issued permits, visit the Montana Pollutant Discharge Elimination System Permits Program  

North Dakota

EPA issues NPDES permits on tribal lands in North Dakota. EPA has delegated authority to issue other NPDES permits to the North Dakota Dept. of Environmental Quality.

• Find EPA-issued permits in North Dakota
• For state-issued permits, visit the North Dakota Pollutant Discharge Elimination System Permits Program 

South Dakota

EPA issues NPDES permits on tribal lands in South Dakota. EPA has delegated authority to issue other NPDES permits to the South Dakota Dept. of Agriculture and Natural Resources.

• Find EPA-issued permits in South Dakota
• For state-issued permits, visit the South Dakota Pollutant Discharge Elimination System Permitting Program 

Utah

EPA issues NPDES permits on tribal lands in Utah. EPA has delegated authority to issue other NPDES permits to the Utah Dept. of Environmental Quality.

• Find EPA-issued permits in Utah
• For state-issued permits, visit the Utah Pollutant Discharge Elimination System Permits Program

Wyoming

EPA issues NPDES permits on tribal lands in Wyoming. EPA has delegated authority to issue other NPDES permits to the Wyoming Dept. of Environmental Quality.

• Find EPA-issued permits in Wyoming
• For state-issued permits, visit the Wyoming Pollutant Discharge Elimination System Program 

Tribal lands

EPA issues all NPDES permits on tribal lands in Region 8. See links above for EPA-issued permits within each state. 

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Applying for an NPDES permit in Region 8

To apply for an NPDES permit on tribal lands in Region 8 or for a federal facility in Colorado, follow the applicable links below. Eligibility criteria for a general permit are included in the general permit documentation.

• Region 8 NPDES Lagoon General Permit
• Region 8 NPDES Drinking Water General Permit
• For Municipal Separate Stormwater System (MS4) permit coverage, please contact the Region 8 stormwater coordinator.
• Individual NPDES permit application forms

To apply for coverage under EPA’s national construction or industrial stormwater permits, follow the applicable link below.

• 2022 Construction general permit (stormwater discharges from construction activities)
• 2021 Multi-Sector General Permit (stormwater discharges from industrial activities)

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Pretreatment in Region 8

EPA Region 8 also provides oversight to delegated pretreatment programs in North Dakota, South Dakota, and Utah, and directly implements the pretreatment programs in Colorado, Montana, and Wyoming. Useful Region 8 pretreatment example documents are below:

• EPA Region 8 - Non-Approved Programs-Example Ordinance (pdf) (784.38 KB)
• EPA Region 8 Example Local Limits Spreadsheet (xls) (512 KB, May 20, 2022)
• US EPA Region 8 Guidance on Defining and Processing Approved Programs (pdf) (69.98 KB, 2011)

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Whole Effluent Toxicity (WET) Laboratory Reporting

The Region 8 NPDES WET Laboratory Reporting tool is a Microsoft Excel based form for use by WET laboratories to report bench data. This tool contains multiple tabs, macros (must enable content when opening for full functionality), drop-downs, and fillable fields to enable laboratory personnel to more easily complete WET reporting needs for NPDES permittees. The tool is protected to enable the fields to properly function; however, there is no password set if laboratories would like to use it as a template and further customize it for their needs.

• WET Laboratory Reporting Forms (xlsm) (668.03 KB, July 2020)  Free Viewers