40 C.F.R. § 401.16
Conventional pollutants.
Cite as 40 C.F.R. § 401.16 (2026)
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]