The regulatory measures under FWCA focus on which critical environmental aspect?

The regulatory measures under the Federal Water Pollution Control Act (FWCA), also known as the Clean Water Act, primarily focus on water resources. This legislation is crucial for safeguarding the integrity of the nation's waters by establishing the framework for regulating discharges of pollutants into water bodies and setting water quality standards.

The FWCA aims to restore and maintain the integrity of the nation's waters by preventing point source pollution, managing nonpoint source pollution, and promoting the protection of wetlands and aquatic ecosystems. This approach is essential for ensuring that water resources remain clean and safe for human use, aquatic life, and the overall environment.

In contrast, while wildlife conservation, soil integrity, and energy industries may be affected by water quality regulations, they do not represent the central focus of the FWCA. The main emphasis is on preserving and enhancing water resources, making it a crucial piece of environmental legislation aimed explicitly at protecting the health of the country's water systems.