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Regulations last checked for updates: Feb 11, 2026
Title 40 - Protection of Environment last revised: Dec 22, 2026
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Title 40
Chapter I
Part 117
Subpart A - Subpart A—General Provisions
View all text of Subpart A [§ 117.1 - § 117.3]
§ 117.2 - Abbreviations.
NPDES equals National Pollutant Discharge Elimination System. RQ equals reportable quantity.
authority:
33 U.S.C. 1251
source:
44 FR 50776, Aug. 29, 1979, unless otherwise noted.
cite as:
40 CFR 117.2
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