40 CFR § 143.18 - § 143.18 Required labeling of solder and flux that is not lead free.

---
identifier: "/us/cfr/t40/s143.18"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 143.18 - §  143.18   Required labeling of solder and flux that is not lead free."
title_number: 40
title_name: "Protection of Environment"
section_number: "143.18"
section_name: "§  143.18   Required labeling of solder and flux that is not lead free."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "143"
part_name: "OTHER SAFE DRINKING WATER ACT REGULATIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 300f"
regulatory_source: "44 FR 42198, July 19, 1979, unless otherwise noted."
cfr_part: "143"
---


# 143.18 §  143.18   Required labeling of solder and flux that is not lead free.

Solder and flux that is not “lead free” as defined in § 143.12(a)(1) must bear a prominent label stating that it is illegal to use the solder or flux in the installation or repair of any plumbing providing water for human consumption.