40 CFR § 401.16 - Conventional pollutants.

---
identifier: "/us/cfr/t40/s401.16"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 401.16 - Conventional pollutants."
title_number: 40
title_name: "Protection of Environment"
section_number: "401.16"
section_name: "Conventional pollutants."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "401"
part_name: "GENERAL PROVISIONS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1251"
regulatory_source: "39 FR 4532, Feb. 1, 1974, unless otherwise noted."
cfr_part: "401"
---


# 401.16 Conventional pollutants.

The following comprise the list of conventional pollutants designated pursuant to section 304(a)(4) of the Act:

1. Biochemical oxygen demand (BOD)

2. Total suspended solids (nonfilterable) (TSS)

3. pH

4. Fecal coliform

5. Oil and grease

[44 FR 44503, July 30, 1979; 44 FR 52685, Sept. 10, 1979]