---
kind: "section"
citation: "40 C.F.R. § 439.27"
title: "40"
number: "439.27"
heading: "Pretreatment standards for new sources (PSNS)."
url: "https://uscodex.org/cfr/40/439.27"
---

# §439.27. Pretreatment standards for new sources (PSNS).


Except as provided in [40 CFR 403.7](/cfr/40/403.7.md), any new source subject to this subpart must achieve the following pretreatment standards:


## Notes

### Amendments

[63 FR 50431, Sept. 21, 1998; 64 FR 48104, Sept. 2, 1999]

### Authority

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

### Source

Source: 48 FR 49821, Oct. 27, 1983, unless otherwise noted.

### Amendments

[63 FR 50431, Sept. 21, 1998; 64 FR 48104, Sept. 2, 1999]