40 CFR 444.16 - Pretreatment standards for existing sources (PSES).

Regulations last checked for updates: Nov 22, 2024

Title 40 - Protection of Environment last revised: Nov 20, 2024

View all text of Subpart A [§ 444.10 - § 444.18]

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

Except as provided in 40 CFR 403.7 and 403.13, any source that introduces wastewater pollutants into a POTW must comply with part 403 and achieve the following pretreatment standards:

Pretreatment Standards ¹

Regulated parameter	Maximum daily	Maximum monthly avg.
Arsenic	84	72
Cadmium	71	26
Chromium	25	14
Copper	23	14
Lead	57	32
Mercury	2.3	1.3
Silver	13	8
Titanium	60	22
Zinc	82	54

¹ Micrograms per liter (ppb)

authority: Secs. 301, 304, 306, 307, 308, 402, and 501 of the Clean Water Act, as amended; 33 U.S.C. 1311,1314,1316,1317,1318,1342,and

source: 65 FR 4381, Jan. 27, 2000, unless otherwise noted.

cite as: 40 CFR 444.16