--- title: Audit, Compliance and Risk Blog | STP | WOTUS description: WOTUS | STP's blog giving insight into audit, compliance and risk issues for EHS, business and accounting. --- [![Specialty Technical Publishers](https://blog.stpub.com/hubfs/STP-logo-white-orange.png)](http://www.stpub.com/) - [My Account](http://stponline.stpub.com) - 1-800-251-0381 # Audit, Compliance and Risk Blog ## [EPA and Corps of Engineers redefine “Waters of the United States” in response to Supreme Court](https://blog.stpub.com/epa-and-corps-of-engineers-redefine-waters-of-the-united-states-in-response-to-supreme-court) Posted by [Jon Elliott](https://blog.stpub.com/author/jon-elliott) on Tue, Sep 19, 2023 - [Tweet](https://twitter.com/share) [![](https://blog.stpub.com/hubfs/Clean%20water.jpg) ](https://blog.stpub.com/epa-and-corps-of-engineers-redefine-waters-of-the-united-states-in-response-to-supreme-court) On September 8, 2023, the US Environmental Protection Agency (EPA) and US Army Corps of Engineers (Corps) adopted revised definitions of “waters of the United States” (WOTUS) which is a critical but undefined term in the Clean Water Act (CWA). As I’ve discussed repeatedly, the agencies, potentially regulated entities, and others have disputed possible definitions for decades. Most recently, in May 2023 the US Supreme Court adjusted its own precedent to over-rule definitions adopted by EPA and the Corps in January 2023 (I discussed the January rules [HERE](https://blog.stpub.com/epa-and-corps-of-engineers-finalize-re-definition-of-waters-of-the-united-states), and the Supreme Court decision (*Sackett v. EPA*)[ HERE](https://blog.stpub.com/supreme-court-narrows-waters-of-the-united-states)). The rest of this note identifies the newest regulatory (re)definitions, adopted to conform the agencies’ regulations to the latest Supreme Court guidance restricting the types of wetlands potentially considered to be WOTUS subject to CWA regulation. [Read More](https://blog.stpub.com/epa-and-corps-of-engineers-redefine-waters-of-the-united-states-in-response-to-supreme-court) 0 Comments [Click here to read/write comments](https://blog.stpub.com/epa-and-corps-of-engineers-redefine-waters-of-the-united-states-in-response-to-supreme-court#comments-listing) Tags: [EPA](https://blog.stpub.com/topic/epa), [clean water](https://blog.stpub.com/topic/clean-water), [CWA](https://blog.stpub.com/topic/cwa), [Clear water](https://blog.stpub.com/topic/clear-water), [water pollutants](https://blog.stpub.com/topic/water-pollutants), [environmental law](https://blog.stpub.com/topic/environmental-law), [water](https://blog.stpub.com/topic/water), [WOTUS](https://blog.stpub.com/topic/wotus) ## [Supreme Court narrows “Waters of the United States”](https://blog.stpub.com/supreme-court-narrows-waters-of-the-united-states) Posted by [Jon Elliott](https://blog.stpub.com/author/jon-elliott) on Mon, May 29, 2023 - [Tweet](https://twitter.com/share) [![](https://blog.stpub.com/hubfs/pexels-david-dibert-16151491.jpg) ](https://blog.stpub.com/supreme-court-narrows-waters-of-the-united-states) On May 25, the United States Supreme court issued its latest decision interpreting the term “waters of the United States” – increasingly referred to by practitioners as “WOTUS” – subject to regulation under the Clean Water Act (CWA) (*Sackett v. EPA*). This decision narrows the geographic and hydrologic circumstances under which “wetlands” can be considered WOTUS, reinterpreting previous Supreme Court decisions and effectively overruling the latest efforts by the US Environmental Protection Agency (EPA) and US Army Corps of Engineers (Corps) to define WOTUS subject to their respective CWA jurisdictional authorities. (I’ve written several times about the agencies’ rule making efforts, most recently [HERE](https://blog.stpub.com/epa-and-corps-of-engineers-finalize-re-definition-of-waters-of-the-united-states)). The remainder of this note summarizes the Supreme Court’s new definition, and the changes it imposes on the physical extent of CWA jurisdiction. [Read More](https://blog.stpub.com/supreme-court-narrows-waters-of-the-united-states) 0 Comments [Click here to read/write comments](https://blog.stpub.com/supreme-court-narrows-waters-of-the-united-states#comments-listing) Tags: [EPA](https://blog.stpub.com/topic/epa), [CWA](https://blog.stpub.com/topic/cwa), [WOTUS](https://blog.stpub.com/topic/wotus) [All posts](https://blog.stpub.com/all) ### Follow Me ### Subscribe by Email ### Browse by Topic Area - [Accounting & Tax ](https://blog.stpub.com/topic/accounting-tax) - [Business & Legal ](https://blog.stpub.com/topic/business-legal) - [Corporate Governance  ](https://blog.stpub.com/../?Tag=Corporate+Governance) - [Environmental ](https://blog.stpub.com/../?Tag=Environmental) - [Global ](https://blog.stpub.com/../?Tag=Global) - [Health & Safety ](https://blog.stpub.com/topic/health-safety) - [Internet ](https://blog.stpub.com/../?Tag=Internet) - [Transportation ](https://blog.stpub.com/../?Tag=Transportation) ### Browse by Tag - [Environmental (344)](https://blog.stpub.com/topic/environmental) - [Business & Legal (309)](https://blog.stpub.com/topic/business-legal) - [Environmental risks (300)](https://blog.stpub.com/topic/environmental-risks) - [Health & Safety (296)](https://blog.stpub.com/topic/health-safety) - [EPA (283)](https://blog.stpub.com/topic/epa) - [Terms & Conditions](https://stphub.stpehs.com/wp-content/uploads/2021/01/STP-Terms-of-Use-Dec-20.pdf) - [Privacy Policy](https://stphub.stpehs.com/wp-content/uploads/2020/12/STP-Privacy-Policy.pdf) - [License Agreement](https://stphub.stpehs.com/wp-content/uploads/2021/01/STP-License-Agreement-Dec-20.pdf) - [Sitemap](http://stpub.com/sitemap) - [Support](http://stpub.com/support) © 2021 STP ComplianceEHS - All rights reserved