Pretreatment standards for existing sources (PSES).

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Leather Tanning and Finishing Point Source Category
  7. Through-the-Blue Subcategory
  8. Pretreatment standards for existing sources (PSES).

Checkout our iOS App for a better way to browser and research.

§ 425.65 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
Maximum for any 1 day Maximum for monthly average
Milligrams per liter (mg/l)
Sulfide 24
Total chromium 12 8
pH (1) (1)

1 Not less than 7.0.

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


Download our app to see the most-to-date content.