40 CFR § 418.20 - Applicability; description of the ammonia subcategory.

---
identifier: "/us/cfr/t40/s418.20"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 418.20 - Applicability; description of the ammonia subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "418.20"
section_name: "Applicability; description of the ammonia subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "418"
part_name: "FERTILIZER MANUFACTURING POINT SOURCE CATEGORY"
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"
regulatory_source: "39 FR 12836, April 8, 1974, unless otherwise noted."
cfr_part: "418"
---


# 418.20 Applicability; description of the ammonia subcategory.

The provisions of this subpart are applicable to discharges resulting from the manufacture of ammonia. Discharges attributable to shipping losses and cooling tower blowdown are excluded.

[44 FR 64081, Nov. 6, 1979]