What Does the Recent WOTUS Rule Change Mean for Your Projects?

Environment
Published

As NAHBNow previously reported, the U.S. Environmental Protection Agency (EPA) and the U.S. Army Corps of Engineers (the agencies) recently halted implementation of the "waters of the U.S." (WOTUS) regulatory definition as finalized under the Trump administration's Navigable Waters Protection Rule (NWPR), reverting back to a pre-2015 WOTUS regulatory definition.

The Sept. 3 announcement was an abrupt reversal because the agencies had previously committed to a series of public hearings, followed by a two-step federal rulemaking process, during which time the WOTUS regulatory definition as finalized under the NWPR was to remain in effect nationwide.

To help builders and developers understand how to move forward with ongoing or planned projects, NAHB developed FAQs to provide interim (unofficial) guidance based upon the Clean Water Act (CWA) statute, existing regulatory guidance documents, and past practices by the agencies during previous instances of changing interpretations of the WOTUS regulatory definition.

NAHB will continue to press the agencies for additional guidance concerning the status of the ruling by the U.S. District Court for the District of Arizona to vacate the NWPR, timing of expected field hearings by the agencies on a new WOTUS definition, and a timeframe for when the Biden administration will propose a new WOTUS regulatory definition under the CWA.

You can access the WOTUS FAQs on nahb.org. For more information, contact Mike Mittelholzer.

Subscribe to NAHBNow

Log in or create account to subscribe to notifications of new posts.

Log in to subscribe

Latest from NAHBNow

Remodeling | Business Management

Jul 23, 2026

Do You Have an Exit Strategy for Your Remodeling Business?

A survey that Pro Remodeler conducted this spring about remodeling business owners’ plans for when they eventually leave their companies reveals a wide gap between when owners plan to retire and how prepared they actually are to do so.

Economics

Jul 22, 2026

Inflation Risks Rise from Renewed Iran War

Renewed hostilities in the Middle East and the end of the ceasefire are placing upward pressure on oil prices, which have risen above $80 a barrel. Rising energy costs are expected to push July inflation higher.

View all

Latest Economic News

Economics

Jul 21, 2026

Shrinking Lots: Trend Levels Off as Smaller Lots Remain the Norm

The long-term shift toward building single-family detached homes on smaller lots appears to have stabilized. According to the latest Survey of Construction (SOC), the share of new homes built on smaller lots remained near record highs in 2025, following more than a decade of steadily shrinking lot sizes.

Economics

Jul 20, 2026

Exterior Material Trends in Single-Family Homes

Vinyl siding was the most used principle exterior wall material for homes started construction in 2025. This material held just over a quarter share of homes, surpassing stucco for the second time since 2018. The declining share for stucco reflected the slowdown for home building in parts of the Sun Belt.

Economics

Jul 17, 2026

Multifamily Gains Lift Overall Starts Despite Single-Family Decline

Strong multifamily growth pushed overall housing starts higher in June, while single-family production remained sluggish as elevated mortgage rates, rising construction costs and persistent labor shortages continued to weigh on the market.