By Rachel Torres • May 21, 2026 • 3 min read
By diana_reeves • May 21, 2026 • 3 min read
The Environmental Protection Agency has proposed a rule that would significantly curtail the ability of states and tribes to block federally permitted projects based on water quality concerns — a shift that environmental groups warn would accelerate approvals for pipelines, mining operations, and industrial facilities in sensitive waterways.
The proposed rule, announced Thursday, targets Section 401 of the Clean Water Act — a provision that has long allowed states and tribes to conduct water quality certifications for projects that discharge into navigable waters. Under current practice, a state can deny a certification or impose conditions if it determines the project would violate its water quality standards.
What the Proposed Rule Changes
Under the new proposal, the scope of state review would be sharply limited. Certification authority would be restricted to point-source discharges specifically covered by the permit — removing the ability of states to consider broader impacts such as cumulative water quality degradation, habitat disruption for protected species, or effects on tribal treaty resources.
Additionally, the rule would impose strict timelines for state decisions. If a state fails to act within 90 days — with a potential 30-day extension — the certification would be deemed granted by default, regardless of whether substantive review has been completed.
EPA Administrator Douglas R. Burgoyne said in a statement that the proposal would “modernize and streamline” the certification process, reducing regulatory uncertainty for project developers. “The current framework has been used to delay or block critical infrastructure for years, even when federal agencies have determined the projects meet environmental standards,” Burgoyne said. “This rule restores the proper balance.”
Pushback from States and Environmental Groups
The proposal has drawn immediate opposition from a coalition of 22 state attorneys general, who sent a letter to EPA warning that the rule would unconstitutionally commandeer state regulatory authority and undermine decades of cooperative federalism under the Clean Water Act.
“States have served as the frontline protectors of America’s waterways since the Act’s passage in 1972,” said California Attorney General Renata Elias, who co-authored the letter. “This proposal doesn’t just weaken those protections — it effectively eliminates them by handing federal permit holders a roadmap to circumvent state review entirely.”
Environmental organizations were more blunt. Earthjustice, which has challenged multiple EPA water rules in court, called the proposal “the most aggressive attack on state water authority in a generation” and pledged litigation if finalized.
“This is not about streamlining,” said Maya Poloner, senior attorney at Earthjustice. “It is about ensuring thatpipeline developers, mining companies, and fossil fuel terminals never have to meaningfully contend with state environmental laws. The 90-day automatic approval provision is particularly brazen — it creates a perverse incentive to overwhelm state agencies with incomplete applications and let the clock run out.”
Impact on Key Projects
The timing of the proposal coincides with an unusually high number of large infrastructure projects awaiting Section 401 certifications. According to an internal Department of Energy document obtained by Media Hook, at least 11 major pipeline and export terminal projects are currently stalled in state review processes — several of which have been pending for more than 18 months.
Among them: the Northern Plains Gas Transmission Pipeline, a 780-mile natural gas conduit that would cross the Missouri and Yellowstone river basins. The project has faced sustained opposition from Montana and North Dakota, where state environmental agencies cited concerns about sediment runoff into cold-water fisheries and contamination risks to Indigenous water supplies.
Under the proposed rule, both states would face a legally binding deadline to complete certification review — and absent a finding of specific, permit-level water quality violations, would lose the ability to impose the types of conditional requirements that have slowed the project to date.
Legal Questions and Congressional Response
Constitutional scholars are divided on whether the rule can withstand judicial review. The Supreme Court’s recent jurisprudence on the Clean Water Act — particularly the Sackett v. EPA decision — has narrowed the scope of federal jurisdiction, but legal experts say the proposed rule is vulnerable on different grounds.
“The problem is not the federal-state balance under the Commerce Clause,” said Professor Annette Whitfield of Georgetown University Law Center. “The problem is that Section 401 is fundamentally a coordination provision — it assigns a defined role to states. You cannot simply rewrite the statute through a rulemaking that eliminates the substantive basis for that role. Courts have been clear: agencies can fill gaps, they cannot rewrite core statutory obligations.”
On Capitol Hill, the proposal has divided Republicans. Members representing coastal and Great Lakes districts — where state water protections have broad constituent support — have expressed reservations, while interior-state members have largely praised the move as removing bureaucratic obstacles to energy infrastructure.
The House Committee on Transportation and Infrastructure has scheduled a hearing on the proposal for next Wednesday. Senate Environment and Public Works Committee Chair Senator Thomas Kaine said his panel would conduct “rigorous oversight” and warned the EPA that any final rule would face “intense scrutiny” on both procedural and substantive grounds.
Timeline and Next Steps
The EPA will accept public comments on the proposed rule for 60 days following its publication in the Federal Register. A final rule is not expected before the fourth quarter of 2026 — but legal experts say challenges could be filed immediately upon publication, potentially triggering an injunction that would delay implementation pending resolution.
For now, states are proceeding under existing rules. But several environmental officials told Media Hook that the proposal has already affected their deliberations — with some project developers citing the pending rule as grounds to resist detailed state review requirements, arguing that a shortened timeline effectively begins when they file, not when the state acknowledges receipt.
The administration has indicated it views the rule as one component of a broader deregulatory agenda targeting energy and manufacturing infrastructure. Several additional water and air rule changes are expected before the end of the year.
