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Class I, II, and III: Deep Injection Wells

Deep Injection Wells generally fall into the following three well classes, Class I, Class II and Class III.

UIC Program primary enforcement authority, or "primacy" for Class II wells exclusive of Indian Lands, has been delegated to state oil and gas agencies. UIC Program primacy for Class I and III wells exclusive of Indian Lands, has been delegated in the states of North Dakota, Utah and Wyoming.

The EPA's Region 8 Ground Water Program office retains primacy for Class I and III wells in Colorado, Montana, South Dakota, and retains primacy for Class I, II and III wells on all Indian Lands in the Region.


Frequently Asked Questions (FAQ's) (PDF Info)

How Do I Submit An Application For A Class I, II or III Injection Well Permit? (232K, 5 pages)

What Are The Class I Permit Requirements? (28K, 2 pages)

What Are The Class II Permit Requirements? (37K, 4 pages)

Where Can I Obtain A Permit Application?

UIC Permit Application Form (100K, 6 pages)
Excel Spreadsheet (589K) In addition to the application form and necessary attachments, the Excel Spreadsheet is requested to expedite the permitting process.
Click on link to download file or right click on the link and select "Save Target As..."

What Are The Statement Of Basis Requirements? (30K, 2 pages)

How Long Will My Application Take To Complete? (40K, 2 pages)

Tell Me About Public Notice And Administrative Appeals (55K, 3 pages)

How Do I...

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Demonstrate Part II (External) Mechanical Integrity? (207K, 2 pages)
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