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

What it does

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.

The Environmental Protection Agency's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 40 of the Code of Federal Regulations:

40 CFR 147

Compared with

The Environmental Protection Agency has published 238 final rules in 2026 so far, compared with 263 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

What happens next and when

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.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket EPA-HQ-OW-2025-2829 on Regulations.gov
• Title 40 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register