40 CFR 442.35 - Pretreatment standards for existing sources (PSES).

Regulations last checked for updates: Feb 07, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026

§ 442.35 - Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart must achieve the following pretreatment standards:

Table—Pretreatment Standards

¹ Mg/L (ppm).

authority: 33 U.S.C. 1311,1314,1316,1317,1318,1342

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

cite as: 40 CFR 442.35