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 |
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1 Micrograms per liter (ppb)