subchapter_subject: "EFFLUENT GUIDELINES AND STANDARDS"
part_code: "403"
part_subject: "GENERAL PRETREATMENT REGULATIONS FOR EXISTING AND NEW SOURCES OF POLLUTION"
subpart_code: "A"
subpart_subject: "Receiving Stations Subcategory"
section_number: "403.4"
section_subject: "State or local law."
cfr_reference: "40 CFR 403.4"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 400 to 424"
revised_date: "Revised as of July 1, 2018"
publication_date: "As of July 1, 2018"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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Nothing in this regulation is intended to affect any Pretreatment Requirements, including any standards or prohibitions, established by State or local law as long as the State or local requirements are not less stringent than any set forth in National Pretreatment Standards, or any other requirements or prohibitions established under the Act or this regulation. States with an NPDES permit program approved in accordance with section 402 (b) and (c) of the Act, or States requesting NPDES programs, are responsible for developing a State pretreatment program in accordance with § 403.10 of this regulation.