Region 8

Underground Injection Control

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In a cooperative effort between EPA, state and tribal governments, the UIC Program works toward protecting underground sources of drinking water (USDW) from contamination by regulating the construction and operation of injection wells. Underground injection wells are primarily used to dispose of wastes into the subsurface and have the potential to adversely affect USDWs. Five classes of wells are defined according to the type of waste that is disposed and where the waste is injected. Detailed information on regulations can be found at EPA Regulations.

A brief description of the well types:

Class I: Industrial and Municipal Wells that Inject Beneath Lowermost USDW
Class II: Associated with Oil and Gas Production
Class III: Associated with Mineral Recovery
Class IV: Wells Injecting Hazardous Waste into USDWs (prohibited)
Class V: Injection Wells Not Included in Other Classes (typically Shallow Disposal Systems)

UIC Public Notices and Announcements


Public Notice to Renew a UIC Permit for a Class I Nonhazardous Industrial Waste Well, Suckla Farms #1 - CO10938-02115 - Wattenberg Disposal, LLC

View Public Notice

UIC Class II Draft Area UIC Permit UT22197-00000 Modification – Newfield Production Company – Denver, Colorado

View all documents pertaining to this application

Public Notice to authorize a Class V Draft Permit modification for a shallow disposal system/injection well at the Butte Highlands Joint Venture Site in Silver Bow County, Montana 

View all documents pertaining to this application

Notice of Intent to Approve an Aquifer Exemption for the Big Bend 1-5 SWDView all documents pertaining to this application

North Dakota’s UIC Class VI Primacy Application

View all documents pertaining to this application

Powertech (USA) Inc.'s Dewey Burdock Uranium Is-Situ Recovery UIC Permit Applications

Class III Permit Application for injection wells related to uranium production

Dewey Burdock Application  

Powertech (USA) Inc.'s Dewey Burdock Uranium Is-Situ Recovery UIC Permit Applications

Class V Permit Application for deep injection wells used for disposal of process waste fluids

Class V Permit Application (note: VERY large PDF file)(159 pp, 80 MB)

Public Notice of UIC Class II Permit-related Actions

Class II public notices


All written comments and requests for additional information should be addressed to the EPA contact person at the following address:

U.S. EPA Region 8 (8P-W-UIC)
1595 Wynkoop Street
Denver, CO 80202-1129

Complete permit applications and related documents are also available for review and reproduction at this address from 10 a.m. to 4 p.m., Monday through Friday, federal holidays excluded. To make an appointment, please call the EPA contact.

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