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Underground Injection Control

Underground Injection is the practice of placing fluids underground, in porous formations of rocks, through wells or other similar conveyance systems (e.g. septic systems, cesspools, etc.). Man-made or produced fluids (liquids, gases or slurries) can move into the pores of rocks by the use of pumps or by gravity. The fluids may be liquid hazardous wastes such as water, wastewater or water mixed with chemicals. Usage of UIC wells historically was a common practice for disposal of fluids during oil production, salt mining, and smaller operations such as automotive repair (service and body work) and dry cleaning.

Class II and III Wells
EPA oversees permitting and testing of several facilities within the region that utilize Class II and III wells.  For more information about these types of wells see Class of Injection Wells.

Class V Wells
EPA conducts inspections for Class V activities in sensitive source water areas. EPA also oversees remediation, permitting and closure of Class V wells. Typical Class V wells are septic systems, large capacity cesspools and automotive disposal wells.

Commonly Asked Questions

Did you receive a letter or Order from EPA requiring Permitting or Closure of your Class V well?

Or are you voluntarily Closing your Class V well?

Did you receive a letter from EPA requiring an Inventory of Injection wells?

Where can I find a sample Inventory Information form? [PDF 142 KB, 3 pp]

(1) "This list is not necessarily all inclusive, the information is compiled from the New York State DEC TAGM list which is updated periodically. For more information on TAGM updates, contact EPA Region 2 or NYS DEC.


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