---
kind: "section"
citation: "42 U.S.C. § 6991g"
title: "42"
title_heading: "The Public Health and Welfare"
number: "6991g"
heading: "State authority"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/6991g"
units:
  - "Chapter 82 — Solid Waste Disposal"
  - "Subchapter IX — Regulation of Underground Storage Tanks"
---

# §6991g. State authority


Nothing in this subchapter shall preclude or deny any right of any [State](/usc/42/6903.md?p=31) or political subdivision thereof to adopt or enforce any regulation, requirement, or standard of performance respecting [underground storage tanks](/usc/42/6991.md?p=10) that is more stringent than a regulation, requirement, or standard of performance in effect under this subchapter or to impose any additional liability with respect to the [release](/usc/42/6991.md?p=8) of [regulated substances](/usc/42/6991.md?p=7) within such [State](/usc/42/6903.md?p=31) or political subdivision.


## Source credit

(Pub. L. 89–272, title II, § 9008, as added Pub. L. 98–616, title VI, § 601(a), Nov. 8, 1984, 98 Stat. 3286; amended Pub. L. 99–499, title II, § 205(g), Oct. 17, 1986, 100 Stat. 1702.)

## Notes

### Editorial Notes

### Amendments

1986—Pub. L. 99–499 amended section generally. Prior to amendment, section read as follows: “Nothing in this subchapter shall preclude or deny any right of any State or political subdivision thereof to adopt or enforce any regulation, requirement or standard of performance respecting underground storage tanks that is more stringent than a regulation, requirement, or standard of performance in effect under this subchapter.”