Which provision requires states to identify impaired waters and develop TMDLs?

Which provision requires states to identify impaired waters and develop TMDLs?

• A. CWA Section 303
• B. CWA Section 319
• C. CWA Section 401
• D. CWA Section 502

Answer: (A)

The requirement to identify waters that do not meet water quality standards and to develop TMDLs for those waters comes from Clean Water Act Section 303(d). This provision asks states to create a list of impaired waters and then establish Total Maximum Daily Loads that cap how much pollutant those waters can receive while still meeting standards. The process guides where reductions are needed and drives plans to restore water quality, often involving EPA approval and follow-up actions. The other options address different parts of water pollution programs. Section 319 focuses on funding and managing nonpoint source pollution. Section 401 deals with state certifications for activities that could affect water quality, usually tied to federal permits or licenses. Section 502 covers definitions used throughout the Act.

The requirement to identify waters that do not meet water quality standards and to develop TMDLs for those waters comes from Clean Water Act Section 303(d). This provision asks states to create a list of impaired waters and then establish Total Maximum Daily Loads that cap how much pollutant those waters can receive while still meeting standards. The process guides where reductions are needed and drives plans to restore water quality, often involving EPA approval and follow-up actions.

The other options address different parts of water pollution programs. Section 319 focuses on funding and managing nonpoint source pollution. Section 401 deals with state certifications for activities that could affect water quality, usually tied to federal permits or licenses. Section 502 covers definitions used throughout the Act.