The EPA has proposed the construction stormwater permit that replaces the one expiring in February, and the whole national saving it puts on the change is $25,383 a year
Every construction site of an acre or more in New Hampshire, Massachusetts, New Mexico and most of Indian country works under one federal permit, and the EPA filed the replacement for it on Friday morning.
The proposed 2027 Construction General Permit would take over from the 2022 permit, which expires on 17 February 2027, and would run five years. All ten EPA regions signed it. Comments are open for 30 days once the notice publishes, which the filing sets for Monday.
The Supreme Court part
The largest legal change in the document has nothing to do with construction.
In March 2025 the Supreme Court held in City and County of San Francisco v. EPA that the Clean Water Act does not authorise what it called end result permit conditions, meaning conditions that make a permittee answerable for the state of the receiving water rather than telling the permittee what to do. The 2022 permit contains a line of that kind, requiring discharges to be controlled as necessary to meet applicable water quality standards. The proposal deletes it and substitutes a set of specific narrative limits written as indicators of a water quality problem in the discharge.
Those indicators are not new. The EPA wrote them into the permit in April 2025, and applied them only to newly eligible sites on lands of exclusive federal jurisdiction. The proposal extends them to everybody the permit covers.
The one new obligation
The rest of the document mostly removes work. One item adds it.
The Stormwater Pollution Prevention Plan already has to be written before an operator files a Notice of Intent, and already has to be produced on request or at an inspection. It does not have to be filed. The EPA proposes that it be filed, in whole, or as a link, or as the site map together with the signed certification, and gives its reason plainly: without it the agency cannot answer a question about a site in real time.
What comes out
Perimeter controls would be required only around ground that can actually receive stormwater, which the EPA says operators have been reading as an instruction to ring the whole site whether or not water flows that way. Stabilization deadlines for arid, semi arid and drought stricken sites would stop turning on three overlapping conditions at once. A site caught by unforeseeable snow or frozen ground could pause the stabilization clock, a change the agency traces to at least one site that hit exactly that during the current permit term. And the Notice of Termination would take post stabilization photographs alone, because the EPA looked at the pairs it has been collecting and concluded the before shots were not doing anything.
Two further cuts are asked about rather than proposed, both on turbidity, and both aimed at long running dewatering discharges.
The money
The EPA puts the total average annual incremental cost decrease of the whole package, against the 2022 permit, at $25,383 a year.
That is the national figure, across every covered operator in every covered jurisdiction, for an action the same document records as a significant regulatory action that went to the Office of Management and Budget and is expected to count as deregulatory under Executive Order 14192.
