---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchD/part143"
level: "part"
label: "Part 143"
heading: "Other Safe Drinking Water Act Regulations"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchD-part143"
sections_count: 16
---

# Part 143 — Other Safe Drinking Water Act Regulations

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter D — Water Programs

## Contents

- [Subpart A — National Secondary Drinking Water Regulations](/cfr/40/chI-subchD-part143-subpartA.md)
- [Subpart B — Use of Lead Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water](/cfr/40/chI-subchD-part143-subpartB.md)