Oklahoma Groundwater regulations & environmental compliance analysis

Oklahoma Groundwater: What you need to know

Governing Law and Regulations

Hazardous waste treatment, storage, and disposal facility (TSDF) requirements: Oklahoma Administrative Code (OAC) 252:205-3-2

For a Limited Time receive a FREE EHS Report "Recordkeeping for EHS Managers." This special report contains a recordkeeping checklist to help you keep track of your records for major environmental laws and OSHA's Hazard Communication Standard. Download Now

Groundwater classification: OAC 785:45-7-3

Solid (nonhazardous) waste facilities: OAC 252:515-9-3

Monitoring well locations at solid waste facilities: OAC 252:515-9-4

Background water quality for solid waste landfills: OAC 252:515-9-31

Concentrated animal feeding operations (CAFOs): OAC 35:17-3-11

Groundwater withdrawals: OAC 785:30-1-1 to 785:30-13-9

Well-drilling licenses: OAC 785:35-1-1 to 785:35-11-3

Regulatory Agencies

Oklahoma Department of Environmental Quality (DEQ)

Oklahoma Water Resources Board (Board)

U.S. Environmental Protection Agency (EPA) Region 6

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Oklahoma has adopted the federal groundwater regulations for both final permitted and interim status hazardous waste TSDFs. See the national section GROUNDWATER for more information.

Groundwater protection and monitoring are also required at all solid (nonhazardous) waste disposal and treatment facilities and at CAFOs.

In addition, the state has developed permitting requirements for groundwater withdrawals, certification, and licensing requirements for well drillers.

Administration and enforcement. DEQ administers and enforces the groundwater rules in Oklahoma. The Oklahoma Water Resources Board enforces and administers the state's regulations for the groundwater withdrawal program.

State Requirements


OAC 785:45-7-3

Oklahoma classifies groundwater into four categories:

  • Class I (Special Source Groundwaters): These ...

Read more about Groundwater