COLO.Regulation
EPA grants Colorado Class VI primacy for carbon sequestration wells
The Environmental Protection Agency approved Colorado's application for primary enforcement responsibility for Class VI injection wells under section 1422 of the Safe Drinking Water Act. The final rule, published October 13, 2026, at 91 FR 64780, lets the Colorado Energy and Carbon Management Commission permit geologic carbon sequestration wells, and codifies earlier non-substantial changes to Colorado's Class II program.
Key points
- The Colorado Energy and Carbon Management Commission will issue and enforce Class VI permits for geologic carbon sequestration.Federal Register
- EPA remains the permitting authority for Class VI injection wells on Indian lands within Colorado.Federal Register
- The final rule takes effect November 12, 2026, and is promulgated for judicial purposes on October 13, 2026.Federal Register
- The rule carries Docket EPA-HQ-OW-2025-2829 and FRL 12995-02-OW, at 91 FR 64780.Federal Register