The Supreme Court did not reverse the nationwide injunctions against EPA’s Waters of the United States rule. Instead, in May 2023, the Court made a narrower decision in Sackett v. EPA that fundamentally reshaped how federal agencies define “waters” subject to Clean Water Act regulation.
This distinction matters enormously: while the Court limited EPA’s power to regulate certain wetlands and water features, existing district court injunctions blocking earlier WOTUS rules remained in place, preventing full implementation of any EPA waters rule for years. For property owners and developers navigating environmental compliance, this means a patchwork of restrictions depending on jurisdiction, with a new proposed rule from the EPA expected to take effect in 2026. This article explains what the Supreme Court actually decided, how the injunctions remain relevant today, and what the new regulatory landscape means for your property or business.
Table of Contents
- What Did the Supreme Court Actually Decide in Sackett v. EPA?
- Why District Court Injunctions Against WOTUS Rules Remain in Effect
- How the EPA’s 2023 WOTUS Rule Became Essentially Unimplementable
- The EPA’s New Proposed WOTUS Rule (November 2025)
- Implications for Property Owners, Developers, and Environmental Compliance
- Timeline: From Sackett (May 2023) to the Expected 2026 Final Rule
- What Comes Next: Regulatory Stability and Future Litigation
- Frequently Asked Questions
What Did the Supreme Court Actually Decide in Sackett v. EPA?
On May 25, 2023, the Supreme Court unanimously reversed a Ninth circuit decision and adopted a narrower standard for determining which waters fall under federal jurisdiction. Rather than accepting the EPA’s broader “significant nexus” test—which captured wetlands and water features with indirect connections to traditional navigable waters—the Court returned to the narrower framework from Rapanos v. United States (2006). Under this new standard, “waters” now include only relatively permanent bodies of water that maintain continuous surface connections to traditional navigable waters like rivers and lakes. This represents a significant contraction of federal authority, placing many wetlands and seasonal water features outside federal jurisdiction entirely. The practical effect of Sackett is striking.
Before the decision, the EPA could regulate a meadow with seasonal seepage if it had a “significant nexus” to a navigable water miles away. After Sackett, that same meadow would likely fall outside federal jurisdiction because it lacks a continuous surface-water connection. A farmer with a drainage ditch that only flows during spring runoff, or a property developer with a seasonal pond, might no longer need federal permits—a major shift that affects millions of acres across the country. However, Sackett’s narrower definition created a legal vacuum. The EPA’s then-existing WOTUS rules—including the 2023 rule that the EPA tried to implement under the Biden administration—could not fully operate because district courts in multiple states had issued injunctions blocking them. These injunctions were not reversed by Sackett; they remained standing, forcing the EPA into regulatory limbo.
Why District Court Injunctions Against WOTUS Rules Remain in Effect
Even after the Supreme Court’s Sackett decision, the EPA could not simply implement a new WOTUS rule nationwide. District courts in various states maintained ongoing injunctions blocking EPA WOTUS rules, creating a patchwork where federal water jurisdiction varies dramatically by geography. In some jurisdictions, the older, broader definition of “waters” remained in effect (a more restrictive interpretation for EPA authority). In others, courts applied transitional standards. This fragmentation meant that a property owner in Texas faced different federal wetland regulations than one in California, despite living under the same Clean Water Act. The persistence of these injunctions reflects the intense litigation over EPA authority that has defined environmental law for the past fifteen years.
Conservative states and business groups successfully argued in federal district courts that the EPA had exceeded its statutory authority. These state victories—embodied in court orders—did not automatically evaporate when Sackett was decided. The Supreme Court’s ruling on the legal standard did not automatically dissolve lower-court injunctions based on different legal theories or older regulatory versions. This created an absurd situation: the EPA wanted to implement a new WOTUS rule consistent with Sackett, but couldn’t do so nationwide because of standing injunctions. If you owned land in one district, you might be subject to EPA jurisdiction; in another, you might not be. This uncertainty persisted from May 2023 through late 2025, making long-term environmental compliance planning nearly impossible for many businesses.
How the EPA’s 2023 WOTUS Rule Became Essentially Unimplementable
When the EPA proposed a new WOTUS rule in 2023, it attempted to implement the Supreme Court’s Sackett framework—defining “waters” as relatively permanent bodies with continuous surface connections. On paper, this rule appeared to align with constitutional requirements and judicial precedent. In practice, it hit a wall. District court injunctions prevented full national implementation, creating a regulatory patchwork that lasted until late 2025. Consider a real-world example: a property owner in Louisiana wanted to develop a tract of land with seasonal wetlands.
Under the 2023 EPA rule, those seasonal features might not qualify as “waters” under the new continuous-surface-connection test. However, an ongoing district court injunction in that state kept older, broader definitions in force. The landowner faced conflicting regulatory requirements—one from the EPA’s attempted new rule, another from a federal court order. Resolving which applied often required expensive litigation, effectively delaying projects indefinitely. The 2023 WOTUS rule never became the definitive nationwide standard it was supposed to be. Instead, the competing district court injunctions meant the rule existed in a kind of legal superposition: officially adopted by the EPA but unenforceable across much of the country.
The EPA’s New Proposed WOTUS Rule (November 2025)
Recognizing the impasse, the EPA and Army Corps of Engineers proposed an entirely new WOTUS rule on November 17, 2025, specifically designed to clear the injunction obstacle and fully implement Sackett’s framework. This rule provides explicit definitions that courts have requested: “Relatively permanent” now means waters that are present year-round or at minimum during the wet season in a given region. “Continuous surface connection” means the water feature must have surface-water connections during the wet season, not year-round. The November 2025 rule is more specific and detailed than the 2023 version, directly addressing judicial concerns about vagueness.
By being more restrictive of federal jurisdiction and more precise in its language, the EPA hoped to overcome the legal objections that resulted in the earlier injunctions. The public comment period closed on January 5, 2026, and the final rule is expected in early to mid-2026. For businesses and property owners, this new rule matters because it will likely become the enforceable nationwide standard—assuming courts don’t issue new injunctions. Unlike the 2023 rule, this version was specifically engineered to survive judicial scrutiny by adopting the precise framework the Supreme Court endorsed. If successfully implemented, it will replace the patchwork created by district court injunctions with a single, clearly defined federal standard for water jurisdiction.
Implications for Property Owners, Developers, and Environmental Compliance
The shift from the broader “significant nexus” test to the narrower “continuous surface connection” test has profound implications for how you approach land use and environmental permitting. Wetlands that previously required federal permits may no longer do so. Isolated ponds, ephemeral streams, and seasonal water features that the EPA once regulated now fall outside federal jurisdiction—though they may remain under state or local control. However, there’s a critical limitation: state water laws did not automatically narrow when Sackett was decided. Many states maintain their own, broader definitions of “waters” or “wetlands” and have independent permitting requirements. A seasonal pond on your property might be outside federal Clean Water Act jurisdiction but still subject to state wetland protection laws.
You may still need state permits even if federal permits are no longer required. This is especially true in states like California, Florida, and many Northeast states that have strong environmental protection laws independent of federal authority. The practical effect is that some property owners gain regulatory relief while others see little change. Agricultural landowners with seasonal drainage features may see significant reductions in permitting requirements. Developers in waterfront areas or areas with complex hydrological connections may find they still need permits, just not federal ones. The key is to understand which wetlands and water features are affected by the change and which remain regulated under state law.
Timeline: From Sackett (May 2023) to the Expected 2026 Final Rule
Understanding the regulatory timeline is essential for businesses planning major projects. The Supreme Court issued Sackett on May 25, 2023. The EPA attempted to implement a new rule consistent with that decision in 2023, but injunctions prevented nationwide implementation. In November 2025, nearly two and a half years later, the EPA and Army Corps proposed a new, more carefully drafted rule.
Public comment closed January 5, 2026, and the final rule is expected between March and June 2026. This timeline reflects the reality of environmental governance: legal innovation and regulatory change move slowly, especially when courts are involved. For a business that began its planning in 2022, the regulatory environment has shifted three times in four years. The person who made permitting decisions in 2020 based on the Obama-era Waters Rule cannot rely on those decisions in 2026.
What Comes Next: Regulatory Stability and Future Litigation
Once the EPA’s new 2026 WOTUS rule is finalized, the agency will attempt to implement it nationwide, assuming courts allow it. The big question is whether this more carefully drawn rule will survive the inevitable legal challenges. Conservative states and business groups have signaled they will likely challenge it, arguing that the EPA still exceeds its statutory authority under the Clean Water Act. Conversely, environmental groups may challenge it as too narrow, arguing that Congress intended broader EPA jurisdiction over water resources.
The political composition of Congress and the presidential administration will continue to shape the regulatory direction. A change in administration could lead to yet another rewrite of the WOTUS rule. For businesses and property owners, this ongoing instability is the real takeaway: the legal definition of “waters” subject to federal jurisdiction remains contested and subject to change. Those planning long-term development should assume regulatory changes and build flexibility into environmental compliance strategies.
Frequently Asked Questions
If the Supreme Court narrowed EPA jurisdiction in Sackett, why do district court injunctions still matter?
Sackett set a new legal standard, but it didn’t automatically dissolve existing court orders. District courts had issued injunctions blocking EPA WOTUS rules based on various legal theories. Those injunctions remained in place, preventing the EPA from implementing any new rule nationwide until they were lifted or the rule was modified to satisfy the courts that had issued them.
Will my wetland still need a federal permit under the new 2026 rule?
Only if it meets the new definition: relatively permanent (present year-round or during wet season) with a continuous surface connection to a traditional navigable water during the wet season. Many seasonal and isolated wetlands will fall outside federal jurisdiction. However, state wetland laws may still apply, so check your state’s requirements.
When does the new WOTUS rule take effect?
The final rule is expected in early to mid-2026. Once published, there is typically a period before implementation begins, though the EPA may attempt immediate application in some contexts. Check EPA announcements in spring 2026 for the effective date.
Has litigation over WOTUS ended?
No. Sackett and the district court injunctions resolved certain legal questions, but the 2026 rule will almost certainly face new lawsuits. Environmental and business groups have announced their intention to challenge whatever rule the EPA adopts, so the regulatory landscape may shift again within 2-3 years.
Why does water regulation keep changing?
The Clean Water Act’s definition of “waters” has been disputed for decades. Congress deliberately wrote the statute broadly, and courts have struggled to interpret its limits. Different administrations prioritize environmental protection differently, leading to regulatory shifts with each transition. Until Congress rewrites the statute with a clearer definition, legal uncertainty will persist.