Threshold odor tests on the raw water and finished water while PAC is being fed should be performed at least

Threshold odor tests on the raw water and finished water while PAC is being fed should be performed at least

• A. Daily
• B. Weekly
• C. Bimonthly
• D. Monthly

Answer: (A)

Threshold odor testing is a quick, practical way to track taste-and-odor performance in a water plant. When PAC is being fed, the odor-removal effectiveness can change as the dose, contact time, and water quality shift, so monitoring needs to be frequent enough to catch those changes and allow timely adjustments. Testing both raw water and finished water daily provides immediate feedback on how well the PAC is performing and helps ensure the finished water stays within acceptable odor limits. Less frequent testing, like weekly or monthly, could miss sudden shifts in odor control, risking consumer complaints or noncompliance.

Threshold odor testing is a quick, practical way to track taste-and-odor performance in a water plant. When PAC is being fed, the odor-removal effectiveness can change as the dose, contact time, and water quality shift, so monitoring needs to be frequent enough to catch those changes and allow timely adjustments. Testing both raw water and finished water daily provides immediate feedback on how well the PAC is performing and helps ensure the finished water stays within acceptable odor limits. Less frequent testing, like weekly or monthly, could miss sudden shifts in odor control, risking consumer complaints or noncompliance.