Indiana Underground Injection Wells regulations & environmental compliance analysis

Indiana Underground Injection Wells: What you need to know

Governing Law and Regulations

Underground injection control (UIC) wells: 327 Indiana Administrative Code (IAC) 5-1.5-68

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UIC well classifications: 329 IAC 3.1-10-3

Class II wells: 312 IAC 16-3-1 to 16-3-9

National Pollutant Discharge Elimination System (NPDES) permits: 327 IAC 5-4-2

Regulatory Agencies

Indiana Department of Natural Resources (DNR) Division of Oil and Gas

Indiana Department of Environmental Management (IDEM)

Indiana State Department of Health (DOH)

U.S. Environmental Protection Agency (EPA) Region 5

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Indiana has adopted the federal requirements for underground injection wells. In addition, the state has some further requirements for underground injection well classifications for oil and gas facilities and for construction permits for underground wastewater disposal facilities.

Administration and enforcement. The EPA has primary responsibility for administering and enforcing most of the underground injection well rules in Indiana. DNR's Division of Oil and Gas is responsible for administering and enforcing the UIC rules for oil and gas production facilities in Indiana. The DOH administers and enforces the permitting rules for underground wastewater disposal facilities in the state.

State Requirements


329 IAC 3.1-10-3

Indiana classifies its UIC wells as follows:

Class I. Class I wells are wells used by hazardous waste generators or owners or operators of hazardous waste management facilities to inject hazardous waste beneath the lowermost formation containing an underground source of drinking water (USDW) within one-fourth ...

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