40 CFR § 412.26 - Pretreatment standards for new sources (PSNS).

---
identifier: "/us/cfr/t40/s412.26"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 412.26 - Pretreatment standards for new sources (PSNS)."
title_number: 40
title_name: "Protection of Environment"
section_number: "412.26"
section_name: "Pretreatment standards for new sources (PSNS)."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "412"
part_name: "CONCENTRATED ANIMAL FEEDING OPERATIONS (CAFO) POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, 1361."
regulatory_source: "68 FR 7269, Feb. 12, 2003, unless otherwise noted."
cfr_part: "412"
---


# 412.26 Pretreatment standards for new sources (PSNS).

(a) Except as provided in 40 CFR 403.7 and in paragraph (b) of this section, any new source subject to this subpart must achieve the following performance standards: There must be no introduction of process waste water pollutants to a POTW.

(b) Whenever rainfall events cause an overflow of process wastewater from a facility designed, constructed, operated, and maintained to contain all process-generated wastewaters plus the runoff from a 25-year, 24-hour rainfall event at the location of the point source, any process wastewater pollutants in the overflow may be introduced to a POTW.