40 CFR 420.56 - Pretreatment standards for new sources (PSNS).

Regulations last checked for updates: Apr 30, 2025

Title 40 - Protection of Environment last revised: Nov 30, 2025

View all text of Subpart E [§ 420.50 - § 420.57]

§ 420.56 - Pretreatment standards for new sources (PSNS).

Any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources.

Subpart E

Pollutant or pollutant property	Pretreatment standards for new sources
Pollutant or pollutant property	Maximum for any 1 day	Average of daily values for 30 consecutive days
	Kg/kkg (pounds per 1,000 lb) of product
Lead	0.0000939	0.0000313
Zinc	0.000141	0.0000469

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

source: 47 FR 23284, May 27, 1982, unless otherwise noted.

cite as: 40 CFR 420.56