---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchD/part127"
level: "part"
label: "Part 127"
heading: "Npdes Electronic Reporting"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchD-part127"
sections_count: 15
---

# Part 127 — Npdes Electronic Reporting

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

## Contents

- [Subpart A — General](/cfr/40/chI-subchD-part127-subpartA.md)
- [Subpart B — Electronic Reporting of NPDES Information From NPDES-Regulated Facilities](/cfr/40/chI-subchD-part127-subpartB.md)
- [Subpart C — Responsibilities of EPA and States, Tribes, and Territories Authorized to Implement the NPDES Program](/cfr/40/chI-subchD-part127-subpartC.md)