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

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§ 425.25 Pretreatment standards for existing sources (PSES).

Except as provided in § 425.04 and 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces process wastewater pollutants into a publicly owned treatment works must comply with 40 CFR part 403, and achieve the following pretreatment standards:

Pollutant or pollutant property	PSES
Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Milligrams per liter (mg/l)
Sulfide	24
Total Chromium	12	8
pH	(¹)	(¹)

[47 FR 52870, Nov. 23, 1982, as amended at 61 FR 35685, July 8, 1996]

                    
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