Governing Law and Regulations
Classification of wells:
Class II: 10 Missouri Code of State Regulations (CSR) 50-1.010 to 50-5.010
Class III: 10 CSR 20-6.090
Prohibitions: Missouri Revised Statutes (Mo. Rev. Stat.) 577.155
Operator License: 10 CSR 50-2.010
Permitting: 10 CSR 50-2.030
Reports: 10 CSR 50-2.080(6)
Missouri Department of Natural Resources (DNR) Division of Environmental Quality Water Protection Program (WPP)
Missouri State Oil and Gas Council
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Missouri has obtained primacy from the U.S. Environmental Protection Agency (EPA) to administer the underground injection control program in the state. Although Missouri has adopted the federal permit-by-rule requirements for underground injection wells and the federal classification system, the disposal of hazardous waste by underground injection is generally prohibited in Missouri.
• Administration and enforcement. Missouri's DNR's WPP and the Missouri Oil and Gas Council are responsible for administering the underground injection well regulations.
CLASSIFICATION OF WELLS
Missouri generally follows the federal classification system. The following wells are permitted in Missouri.
10 CSR 50-1.010 to 10 CSR 50-5.010
Class II wells are wells used to inject fluids associated with oil and natural gas production or fluids and compounds used for enhanced hydrocarbon recovery. Class II wells are regulated by the Missouri Oil and Gas Council.
10 CSR 20-6.090
Class III wells are wells used to inject fluids to extract minerals. Class III wells cannot be used by ...