40 CFR § 118.1 - Purpose.

---
identifier: "/us/cfr/t40/s118.1"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 118.1 - Purpose."
title_number: 40
title_name: "Protection of Environment"
section_number: "118.1"
section_name: "Purpose."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "118"
part_name: "CLEAN WATER ACT HAZARDOUS SUBSTANCES FACILITY RESPONSE PLANS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1251  and Executive Order 11735, superseded by Executive Order 12777, 56 FR 54757."
regulatory_source: "89 FR 21955, Mar. 28, 2024, unless otherwise noted."
cfr_part: "118"
---


# 118.1 Purpose.

This part establishes Clean Water Act (CWA) hazardous substance facility response plan requirements for the owner or operator of any non-transportation-related onshore facility that, because of its location, could reasonably be expected to cause substantial harm to the environment by discharging CWA hazardous substances into or on the navigable waters, adjoining shorelines, or the exclusive economic zone.