Data / Federal rules / 2026-20846

Colorado Underground Injection Control (UIC) Program; Class VI Primacy

The Environmental Protection Agency published this final rule in the Federal Register on October 13, 2026. It takes effect on November 12, 2026.

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What the agency says

The U.S. Environmental Protection Agency (EPA or the Agency) is approving an application from the State of Colorado that requests primary enforcement responsibility (primacy) for Class VI injection wells under Safe Drinking Water Act (SDWA) section 1422. The EPA's approval of the State's UIC program primacy application will allow the Colorado Energy and Carbon Management Commission (ECMC) to issue and enforce UIC Class VI permits for geologic carbon sequestration. The EPA will remain the permitting authority for Class VI injection wells on Indian lands within the State. With this action, the EPA also intends to codify previously approved, non-substantial changes to Colorado's UIC program for Class II injection wells.

Key facts

Document number: 2026-20846
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: October 13, 2026
Takes effect: November 12, 2026
Dates: This final rule is effective on November 12, 2026. The incorporation by reference of certain material listed in this rule is approved by the Director of the Federal Register as of October 13, 2026. For judicial purposes, this final rule is promulgated as of October 13, 2026.
Docket: EPA-HQ-OW-2025-2829; FRL 12995-02-OW
Code of Federal Regulations: 40 CFR 147
Topics: Environmental protection; Incorporation by reference; Indians-lands; Intergovernmental relations; Reporting and recordkeeping requirements; Water supply
Pages: 8

The document on federalregister.gov PDF

Other documents from the Environmental Protection Agency

Document	Type	Published
Virginia: Approval of State Coal Combustion Residuals Permit Program 2026-21622	Final rule	Oct 22
Utah Underground Injection Control Program; Class VI Primacy 2026-21618	Proposed rule	Oct 22
Nevada: Codification and Incorporation by Reference of Approved Underground Storage Tank Program 2026-21603	Final rule	Oct 22
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Northwest Clean Air Agency, Washington State 2026-21383	Proposed rule	Oct 19
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Everything from the Environmental Protection Agency · Rules on environmental protection · Rules on incorporation by reference · Rules on indians-lands · Published in October 2026

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.