Protecting Underground Sources of Drinking Water from Underground Injection (UIC)

Underground Injection
EPA regulates the construction, operation, permitting, and closure of injection wells used to place fluids underground for storage or disposal. Learn more about injection well types.
Hydraulic fracturing with diesel fuels
EPA has program requirements for permitting underground injection of diesel fuels in hydraulic fracturing to ensure protection of underground sources of drinking water (USDWs). Learn more about the permitting requirements.
Geologic sequestration of carbon dioxide
EPA has finalized requirements that address carbon dioxide injection for long-term storage to ensure that wells used for geologic sequestration are appropriately sited, constructed, tested, monitored, funded, and closed. Read more about Class VI wells.

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Protecting Underground Sources of Drinking Water from Underground Injection (UIC)

This website contains information for owners and operators of injection wells, regulators, and the public about safe injection well operations to prevent the contamination of underground sources of drinking water.

UIC Well Classes

Related Activities

About UIC Wells

UIC Where You Live

EPA has ten regional offices. Each regional office oversees local state, territory, and tribal UIC activities. Select your state from the menu below, or click on your region to find local UIC information about:

Public notices
Permitting and registration
Tribal concerns
Regional UIC guidance documents
Contacts

Map of the US, split into EPA regions

Protecting Underground Sources of Drinking Water from Underground Injection (UIC)

Underground Injection

Hydraulic fracturing with diesel fuels

Geologic sequestration of carbon dioxide

Protecting Underground Sources of Drinking Water from Underground Injection (UIC)

UIC Well Classes

Related Activities

About UIC Wells

UIC Where You Live