Comment Letter: Updated Definition of “Waters of the United States”

  • Jan 5, 2026
  • Comment Letters

To: Stacey Jensen, Office of Water, U.S. Environmental Protection Agency and Milton Boyd, Office of the Assistant Secretary of the Army for Civil Works, U.S. Department of the Army

Subject: U.S. Environmental Protection Agency and U.S. Army Corps of Engineers Updated Definition of “Waters of the United States” — Docket ID No. EPA-HQ-OW-2025-0322

Letter Excerpt: 

The Association of California Water Agencies (ACWA) respectfully submits comments regarding the U.S. Environmental Protection Agency’s (EPA) and U.S. Army Corps of Engineers (USACE) (collectively “the agencies”) updated definition of “waters of the United States” (WOTUS).1 ACWA appreciates the agencies’ progress and supporting materials2 to develop a durable definition of WOTUS to meet the nation’s water supply and quality needs. ACWA’s recommendations are discussed below.

Download Comment Letter 

Suggested Resources

3 RESOURCES
Coalition Letter: Development of Extended Range Atmospheric River Forecasting – Budget Request

Sorry, but only ACWA members have permission to view this content. Member login is required.

Comment Letter: Revised Draft Sacramento/Delta Bay-Delta Plan Updates & Ch. 13 of Draft Staff Report

To: Mr. Erik Ekdahl, Chief Deputy Director, Division of Water Rights, State Water Resources Control Board Subject: Revised Draft Sacramento/Delta […]

Comment Letter: Comments on OEHHA’s First Public Review Draft Proposed Public Health Goal for 1,4-Dioxane in Drinking Water

Agency: Pesticide and Environmental Toxicology Branch, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency Subject: Comments on OEHHA’s […]