What does the Unregulated Contaminant Monitoring Regulation provide the EPA?

• A. Data on common contaminants at treatment plants
• B. Data on contaminants resulting from stormwater runoff
• C. Scientifically valid data on unregulated contaminants in drinking water
• D. Scientifically valid data on contaminants in treatment plant influent

Answer: (C)

The main idea here is what UCMR does: it collects national, scientifically valid data on contaminants in drinking water that are not yet regulated. This program uses standardized lab methods to measure how often and at what levels these unregulated substances appear in drinking water, so the EPA can assess potential health risks and decide which contaminants merit regulation in the future.

That’s why the best choice is that it provides scientifically valid data on unregulated contaminants in drinking water. It’s not about stormwater runoff, and it’s not focused on contaminants in treatment plant influent or on common contaminants that are already regulated.