Which CCR content is provided by the EPA definitions for MCLGs, MCLs, variances, and exemptions?

• A. The system's water chemistry data
• B. The EPA definitions for MCLGs, MCLs, variances, and exemptions
• C. A map of the service area
• D. The contact information for the operator

Answer: (B)

The main idea is that the CCR explains regulatory terms so readers can understand the report. The EPA provides standard definitions for MCLGs (maximum contaminant level goals), MCLs (maximum contaminant levels), variances, and exemptions, and the CCR includes these definitions to clarify what these terms mean in the context of drinking water standards. That definitional content is exactly what the EPA supplies, making it the correct choice.

The other items describe actual data or information the CCR may contain—such as measured water chemistry results, a map of the service area, or contact information for the operator—but they are not the definitional material supplied by the EPA for these terms.