Defense of Environment and Property Act of 2026
- Sponsor
- Sen. Paul, Rand [R-KY]
- Committees
- Environment and Public Works Committee (primary)
- Last action
- Aug 5, 2026
Bottom line
This bill substantially curtails federal authority over water pollution by narrowing the definition of "navigable waters" and strengthening property owner rights against federal environmental regulation, potentially shifting significant regulatory responsibility to states.
What it actually does
This bill significantly narrows the definition of "navigable waters" under the Federal Water Pollution Control Act (Clean Water Act), limiting federal jurisdiction to waters that are navigable-in-fact or permanently flowing and connected to such waters. It explicitly excludes intermittent streams, certain wetlands, and waters without continuous surface connections. The bill also prohibits the use of the "significant nexus test," requires written consent for federal entry onto private property for data collection, and mandates compensation for property owners if federal water regulations diminish their property's value.
Proponents argue
Proponents argue the bill restores traditional state authority over land and water use, protects private property rights from federal overreach, and provides much-needed regulatory certainty by clarifying the scope of federal jurisdiction. They contend it respects the original intent of the Clean Water Act by focusing on truly navigable waters and reduces burdensome regulations on farmers, ranchers, and developers.
Opponents contend
Opponents would likely argue that the bill severely weakens the Clean Water Act, leaving many critical wetlands, headwaters, and ephemeral streams unprotected from pollution, which could have cascading negative impacts on water quality, ecosystems, and downstream communities. They would contend it undermines decades of environmental protection and could lead to increased pollution and degradation of water resources across the nation.
The bill is short and relatively easy to read, allowing for quick comprehension of its core changes, though its legal and environmental implications are extensive.
Section 2(a), amending Section 502(7) of the FWPCA
Narrowing the Definition of "Navigable Waters"
This provision redefines "navigable waters" to include only waters that are "navigable-in-fact" or permanent, standing, or continuously flowing bodies of water (like streams, oceans, rivers, lakes) that are connected to navigable-in-fact waters. It explicitly excludes waters that do not physically abut or lack a continuous surface water connection to navigable waters, man-made or natural structures with intermittent or ephemeral flow, and wetlands without a continuous surface connection to federal waters.
Supporters argue
Supporters argue this clarification provides much-needed regulatory certainty, limits federal overreach, and restores states' primary role in land and water management, as intended by the Clean Water Act. They contend it prevents the federal government from regulating isolated puddles or ditches on private property.
Critics contend
Critics would argue this redefinition drastically shrinks the scope of the Clean Water Act, leaving vital headwaters, seasonal streams, and wetlands vulnerable to pollution, which are crucial for maintaining downstream water quality and supporting biodiversity. They contend it ignores the scientific interconnectedness of water systems.
Tradeoffs
The bill balances federal environmental protection goals with states' rights and private property interests. The tension lies between a broad interpretation of "waters of the United States" to protect interconnected aquatic ecosystems and a narrow interpretation to limit federal regulatory scope and reduce burdens on landowners.
Section 2(b), inserting new Section 520 into FWPCA
Restricting Federal Agency Activities and Prohibiting Significant Nexus Test
This section prohibits the EPA and Corps of Engineers from impinging on state land and water use powers without explicit state authorization. It forbids the aggregation of wetlands or waters not explicitly defined as federal waters to determine federal jurisdiction and explicitly excludes certain wetlands from federal oversight. It also bans the use of the "significant nexus test" for determining federal jurisdiction and treats groundwater as state water, not to be considered for federal jurisdiction.
Section 2(b), new Section 520(c) of FWPCA
Expedited Judicial Review for Jurisdictional Determinations
This provision allows states or individual property owners to obtain expedited judicial review within 30 days of a federal jurisdictional determination that affects their ability to plan land and water resource development or use. This aims to provide a swift legal avenue for challenging federal decisions.
Section 3(a)
Repealing Prior Regulations and Guidance on Navigable Waters
This section explicitly states that several key regulations and guidance documents, including the 1986 Corps of Engineers "Final Rule for Regulatory Programs" and the 2008 "Rapanos" guidance, have no force or effect. It also nullifies any subsequent federal agency regulation or guidance issued by any federal agency that defines or interprets the terms "navigable waters" or "waters of the United States."
Section 3(b)
Restricting Future Agency Rulemaking on Navigable Waters
This provision prohibits the Secretary of the Army (through the Chief of Engineers) and the EPA Administrator from promulgating any rules or issuing any guidance that expands or interprets the definition of "navigable waters" unless expressly authorized by Congress. This aims to centralize definitional authority within the legislative branch.
Section 5, amending Section 308(a) of the FWPCA
Requiring Landowner Consent for Federal Entry on Private Property
This provision amends the Federal Water Pollution Control Act to require written consent from a property owner before a federal agency representative can enter private property to collect information about navigable waters. The owner must be notified of the entry date, given access to any collected data, and has the right to be present during data collection.
Section 6
Mandating Compensation for Diminished Property Value Due to Federal Water Regulations
This provision mandates that if a federal regulation related to the definition of "navigable waters" or "waters of the United States" diminishes the fair market value or economic viability of a property, the issuing federal agency must pay the affected property owner an amount equal to twice the value of the loss, as determined by an independent appraiser. Crucially, the regulation has no force or effect until all affected landowners are compensated.
This section clarifies that the Act does not affect, amend, or supersede a State's right to regulate waters within its borders or a landowner's duty to adhere to State nuisance laws relating to waters. It preserves state authority and existing landowner responsibilities under state law.
Section 4
Why it matters:It is standard legislative practice to include such clauses to clarify the scope of federal preemption and avoid unintended consequences, ensuring that states retain their existing powers.
Case for: Supporters would argue this provision is crucial to reassure states that the federal government is not attempting to preempt their own environmental regulations, reinforcing the principle of cooperative federalism and states' primary role in land and water management.
Case against: Critics might argue that while it preserves state rights, it doesn't compel states to act, potentially leading to a regulatory vacuum in states unwilling or unable to fill the gap left by reduced federal oversight, thereby creating inconsistent environmental protections across the nation.
Estimated impact: Clarifies the division of regulatory authority, potentially shifting the burden of environmental protection to states if they choose to act, and ensures landowners remain accountable to state laws.