Skip to content
LexBuild

40 CFR § 463.10 - Applicability; description of the contact cooling and heating water subcategory.

---
identifier: "/us/cfr/t40/s463.10"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 463.10 - Applicability; description of the contact cooling and heating water subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "463.10"
section_name: "Applicability; description of the contact cooling and heating water subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "463"
part_name: "PLASTICS MOLDING AND FORMING POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307, 308, and 501, Clean Water Act (Federal Water Pollution Control Act Amendments of 1972, as amended by Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e) and (g), 1316 (b) and (c), 1317 (b) and (c), 1318, and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."
regulatory_source: "49 FR 49047, Dec. 17, 1984, unless otherwise noted."
cfr_part: "463"
---

# 463.10 Applicability; description of the contact cooling and heating water subcategory.

This subpart applies to discharges of pollutants from processes in the contact cooling and heating water subcategory to waters of the United States and the introduction of such pollutants into publicly owned treatment works. Processes in the contact cooling and heating water subcategory are processes where process water comes in contact with plastic materials or plastic products for the purpose of heat transfer during plastics molding and forming.