S. 4956: A bill to amend the Federal Water Pollution Control Act to clarify the scope of an exemption from permits for the discharge of dredged or fill material, and for other purposes.

S. 4956 is a bill introduced in the U.S. Senate on July 13, 2026, by Senator Cynthia M. Lummis, with co-sponsors Mike Lee and Pete Ricketts. The bill aims to amend the Federal Water Pollution Control Act (commonly known as the Clean Water Act) to clarify the scope of exemptions from permits required for discharging dredged or fill material into waters of the United States. Specifically, it seeks to define more precisely which activities are exempt from these permitting requirements, potentially affecting industries such as agriculture, construction, and land development.

Supporters of S. 4956 argue that the bill provides much-needed clarity and predictability for landowners, farmers, and developers by delineating the boundaries of federal regulatory authority over water bodies. They contend that by specifying exemptions, the legislation will reduce bureaucratic red tape, facilitate economic development, and protect property rights without compromising environmental standards. Proponents also highlight that the bill aligns with recent Supreme Court decisions, such as Sackett v. Environmental Protection Agency, which emphasized the need for clear definitions in environmental regulations.

Critics of S. 4956 express concern that the bill could weaken environmental protections by narrowing the scope of waters subject to federal oversight. They argue that by expanding exemptions from permitting requirements, the legislation may lead to increased pollution and degradation of wetlands and other critical water resources. Environmental advocacy groups warn that such changes could undermine the objectives of the Clean Water Act, which aims to restore and maintain the integrity of the nation's waters. Additionally, opponents fear that reduced federal oversight might result in inconsistent protections across states, potentially harming ecosystems and public health.

The analysis of bill S. 4956, which aims to amend the Federal Water Pollution Control Act, reveals no direct industry overlaps between the sponsor Cynthia Lummis's top donor industries and the bill's subject matter. The top donor industries do not appear to have a vested interest in water pollution control or related environmental regulations. While there is significant lobbying activity in the policy area, it is primarily from organizations that do not have a direct financial connection to Lummis's campaign contributions. For instance, the Environmental Defense Fund, which contributed $30,000, advocates for environmental protections but does not directly correlate with Lummis's donor base. Overall, there is a low risk of conflict of interest based on the available data.

Organizations that lobbied on issues related to this bill's policy area.

Source: Senate Lobbying Disclosure Act (LDA) filings, 2026

Top industries funding Cynthia Lummis, ranked by total contributions.

Source: OpenSecrets.org (Center for Responsive Politics)