40 CFR § 144.18 - Requirements for Class VI wells.

---
identifier: "/us/cfr/t40/s144.18"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 144.18 - Requirements for Class VI wells."
title_number: 40
title_name: "Protection of Environment"
section_number: "144.18"
section_name: "Requirements for Class VI wells."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "144"
part_name: "UNDERGROUND INJECTION CONTROL PROGRAM"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Safe Drinking Water Act, 42 U.S.C. 300f  Resource Conservation and Recovery Act, 42 U.S.C. 6901"
regulatory_source: "48 FR 14189, Apr. 1, 1983, unless otherwise noted."
cfr_part: "144"
---


# 144.18 Requirements for Class VI wells.

Owners or operators of Class VI wells must obtain a permit. Class VI wells cannot be authorized by rule to inject carbon dioxide.

[75 FR 77288, Dec. 10, 2010]