Pretreatment standard

{
  "id": "MLC-T-ENV-022033",
  "term": "Pretreatment standard",
  "field": "Environment",
  "definition": "1. Any regulation containing pollutant discharge limits promulgated by the EPA in accordance with section 307 (b) and (c) of the Act, which applies to industrial users of a publicly owned treatment works. It further means any State or local pretreatment requirement applicable to a discharge and which is incorporated into a permit issued to a publicly owned treatment works under section 402 of the Act.\n\n2. Effluent limitations determined on a case-by-case basis under section 402(a)(1) of the CWA or pretreatment standards developed as local limits by the control authority under 40 CFR § 403.6(c) that apply to the discharge of wastewater subject to this provision. The permit writer (or control authority) will calculate these limitations or standards using a “building block” approach or the “combined wastestream formula.” Under this approach, the permit writer (or control authority) will develop flow-weighted effluent limitations or standards for the treated combined wastestream by applying the limitations or standards in 40 CFR subchapter N that would otherwise apply to a particular wastestream received from off-site if the wastestream were treated and discharged from the facility at which it was generated.\n\n3. Any regulation containing pollutant discharge limits promulgated by the EPA in accordance with section 307 (b) and (c) of the Act, which applies to Industrial Users. This term includes prohibitive discharge limits established pursuant to § 403.5.\n\n4. Any regulation containing pollutant discharge limits promulgated by EPA in accordance with CWA section 307(b) and (c) that applies to IUs. This term includes prohibitive discharge limits established pursuant to 40 CFR 403.5. [40 CFR 403.3(l)]",
  "see_also": [
    "National Pretreatment Standard"
  ],
  "references": [
    "40 CFR 117.1 (CFR 2013)",
    "40 CFR 437.2 (CFR 2013)",
    "40 CFR 403.3 (CFR 2017)",
    "Pretreatment Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/pretreatment-standard/"
}