40 CFR § 401.16
Conventional pollutants
June 9, 2020
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]