CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY > SUBPART BC—Sodium Fluoride Production Subcategory (§415.550 to §415.556) > 415.554—Pretreatment standards for existing sources (PSES).

415.554—Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 493.13, any existing 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 existing sources (PSES):
Subpart BC—Sodium Fluoride
Pollution or pollutant property PSES effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Milligrams per liter (mg/l)
Fluoride 50 25