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Underground Injection Control
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.
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)
North Dakota’s UIC Class VI Primacy Application
Powertech (USA) Inc.'s Dewey Burdock Uranium Is-Situ Recovery UIC Permit Application: Class III Permit Application for deep injection wells related to uranium production and used for disposal of process waste fluids.
UIC Public Notices
These actions would authorize the injection of fluids into the subsurface for the purpose of either enhancing the production of oil and gas resources or disposal of produced water associated with these operations, and may include a proposed Aquifer Exemption of the Proposed Injection Zone(s).
These actions would authorize the injection of fluids into the subsurface for the purpose of commercial or industrial wastewater disposal.
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.