# Clean Water Act **Type:** Federal law (P.L. 92-500; Federal Water Pollution Control Act Amendments of 1972) **Enacted:** October 18, 1972 — passed over [[Richard Nixon]]'s veto **Sponsor:** Senator Edmund Muskie (D-ME) **Vote:** Senate 74-0 (veto override) | House 247-23 (veto override) ## Summary The foundational federal law governing water quality in the United States — a comprehensive regulatory framework establishing the goal that all navigable waters of the United States would be fishable and swimmable, and that the discharge of pollutants into navigable waters would be eliminated. The Act established the National Pollutant Discharge Elimination System (NPDES) — a permit system requiring anyone discharging pollutants into waters of the United States to obtain a permit specifying what they can discharge, how much, and under what conditions. Before the Clean Water Act, American waterways were effectively unregulated dumps: the Cuyahoga River in Cleveland caught fire in 1969 (it had caught fire at least 13 times since 1868); Lake Erie was declared "dead"; raw sewage flowed into rivers that supplied drinking water. The Act's passage — over Nixon's veto (he objected to the cost, not the principle) — transformed American water quality within a generation. The Act's regulatory structure centers on a critical jurisdictional question: **what counts as "waters of the United States"?** This question — whether the Act covers only major rivers and lakes, or also wetlands, streams, and water bodies connected to navigable waters — has been the subject of decades of litigation, regulatory revision, and the Supreme Court's 2023 decision in *Sackett v. EPA*, which dramatically narrowed the Act's scope. ## KB Significance **1. *Sackett v. EPA* and the jurisdictional gutting.** The Supreme Court's 2023 decision in *Sackett v. EPA* rewrote the Clean Water Act's jurisdictional reach, holding that the Act covers only wetlands with a "continuous surface connection" to traditional navigable waters — eliminating federal protection for millions of acres of wetlands, ephemeral streams, and isolated water bodies that had been regulated for decades. [[Justice Kavanaugh]]'s concurrence (joined by the three liberal justices) acknowledged that the majority opinion "reads the Act's use of 'waters' to include only 'relatively permanent, standing or continuously flowing bodies of water' " — a reading that excludes the intermittent streams and seasonally connected wetlands that are critical to flood control, water filtration, and habitat. *Sackett* is the environmental counterpart to *[[Shelby County v. Holder]]*: the [[Federalist Society]] pipeline produced the justices who produced the ruling that dismantled the regulatory framework. **2. The wetlands development bonanza.** *Sackett*'s narrowing of CWA jurisdiction immediately opened millions of acres of previously protected wetlands to development without federal permits. Real estate developers, agricultural interests, and fossil-fuel companies had advocated for this outcome for decades. The decision is estimated to remove federal protection from approximately half of the nation's wetlands — the ecosystems that provide flood control, water filtration, storm surge protection, and biodiversity habitat. The economic beneficiaries (developers, extractive industries) gain development rights; the costs (flooding, water contamination, habitat loss) are distributed to the public. This is the environmental version of the cost-shifting the vault documents across policy domains. **3. The PFAS and emerging contaminant crisis.** The Clean Water Act's regulatory framework is being tested by emerging contaminants — particularly PFAS ("forever chemicals"), microplastics, and pharmaceutical residues — that the Act's original structure was not designed to address. EPA's authority to regulate these contaminants under the CWA and the Safe Drinking Water Act is being challenged by chemical manufacturers and their allies in Congress. The [[House Energy and Commerce Committee]]'s environmental jurisdiction is where the fight over PFAS regulation plays out — industry lobbying to weaken EPA's proposed PFAS drinking-water standards flows through the committee. **4. The state delegation problem.** The CWA allows states to assume primary enforcement responsibility (primacy) for the NPDES permit program. In states where regulatory agencies have been captured by the industries they regulate — a pattern the vault documents across domains — state primacy means weaker permits, less enforcement, and pollution that federal oversight might have prevented. The tension between federal standards and state implementation is the water-quality version of the federalism fights the vault tracks in voting rights, environmental policy, and labor law. ## The 2026 WOTUS rewrite *Sackett* narrowed the statute; the rulemaking is where the narrowing is being written down. On **September 4, 2026** the [[Environmental Protection Agency]] and the Department of the Army issued a **Supplemental Notice of Proposed Rulemaking** on the definition of "waters of the United States," adding regulatory alternatives to be considered alongside the 2025 proposed rule, with a 30-day comment period once published in the Federal Register. The 2025 proposal had drawn more than 220,000 comments in a 45-day window that closed January 5, 2026. The agencies' own framing is jurisdictional minimalism dressed as certainty: Administrator [[Lee Zeldin]] called the goal "a durable WOTUS definition that follows the law and ends burdensome regulatory uncertainty," and Assistant Secretary of the Army for Civil Works Adam Telle described the effort as removing "sclerotic government overreach" and delivering answers "at Trump Speed." Environmental groups read the supplemental proposal as reducing federal protection to relatively permanent, standing or continuously flowing waters plus wetlands with a direct surface connection to them — that is, as writing the *Sackett* dissent's fears into the code. Nothing is final: the supplemental notice explicitly declines to foreclose any option from the earlier proposal. > [!warning] Provisional > The scale of the coverage loss is contested and depends on which of the alternatives is finalized. Advocacy estimates ("nearly all wetlands and streams") and the agencies' own description are both recorded here as claims; the operative text will be whatever appears in the final rule. ## See Also - [[Clean Air Act]] — companion environmental statute - [[National Environmental Policy Act]] — the environmental review framework - [[Federalist Society]] — produced the justices who narrowed CWA jurisdiction in *Sackett* - [[Koch Network]] — fossil-fuel interests opposing CWA enforcement - [[House Energy and Commerce Committee]] — committee of jurisdiction - [[Environmental Protection Agency]] · [[Lee Zeldin]] — the agency and administrator running the 2026 WOTUS rewrite - [[PFAS and Forever Chemicals]] — persistent contamination and the regulatory fight over drinking-water limits - [[Groundwater]] — aquifer depletion, contamination, and water-rights politics