{"data":{"id":"us/40-cfr-421.143","jurisdiction":"us","citation":"40 CFR 421.143","heading":"Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.","body":"Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:\n(a) Sodium Antimonate Autoclave Wastewater.\nBAT Limitations for the Primary Antimony Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of antimony contained in sodium antimonate product\nAntimony 30.150 13.440\nArsenic 21.720 9.687\nMercury 2.344 0.937\n(b) Fouled Anolyte.\nBAT Limitations for the Primary Antimony Subcategory\nPollutant or pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg pounds per million pounds of antimony metal produced by electrowinning\nAntimony 30.150 13.440\nArsenic 21.720 9.687\nMercury 2.344 0.937\n(c) Cathode Antimony Wash Water\nBAT Limitations for the Primary Antimony Subcategory\nPollutant of pollutant property Maximum for any 1 day Maximum for monthly average\nmg/kg (pounds per million pounds) of antimony metal produced by electrowinning\nAntimony 60.310 26.870\nArsenic 43.430 19.370\nMercury 4.687 1.875","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY","Subpart N—Primary Antimony Subcategory"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"9c3800506ce775ee4d3404bf50b2c39ae8315eff9736a73f7544cea9aef2539f","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-421.142","next":"us/40-cfr-421.144"},"notice":"GroundRules: Original legal text. Not legal advice."}