{"data":{"id":"us/40-cfr-444.16","jurisdiction":"us","citation":"40 CFR 444.16","heading":"Pretreatment standards for existing sources (PSES).","body":"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:\nPretreatment Standards 1\nRegulated parameter Maximum daily Maximum monthly avg.\nArsenic 84 72\nCadmium 71 26\nChromium 25 14\nCopper 23 14\nLead 57 32\nMercury 2.3 1.3\nSilver 13 8\nTitanium 60 22\nZinc 82 54\n1 Micrograms per liter (ppb)","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 444—WASTE COMBUSTORS POINT SOURCE CATEGORY","Subpart A—Commercial Hazardous Waste Combustor 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":"505b6660486f62d8e9fc6257f5c99ade07519e247dc63d642b33079e687af452","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-444.15","next":"us/40-cfr-444.17"},"notice":"GroundRules: Original legal text. Not legal advice."}