---
kind: "section"
citation: "40 C.F.R. § 442.31"
title: "40"
number: "442.31"
heading: "Effluent limitations attainable by the application of the best practicable control technology currently available (BPT)."
url: "https://uscodex.org/cfr/40/442.31"
---

# §442.31. Effluent limitations attainable by the application of the best practicable control technology currently available (BPT).


Except as provided in [40 CFR 125.30 through 125.32](/cfr/40/125.30..125.32.md), any existing point source subject to this subpart must achieve the following effluent limitations representing the application of BPT:


## Notes

### Authority

Authority: 33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342 and 1361.

### Source

Source: 65 FR 49700, Aug. 14, 2000, unless otherwise noted.