If fluoride is added before filtration, what is a potential consequence?

• A. High fluoride readings
• B. No effect on fluoride levels
• C. Low fluoride readings
• D. Excessive fluoride accumulation

Answer: (C)

Fluoride is often added to drinking water for its benefits in preventing dental cavities; however, the timing of its addition is crucial for its effective management. When fluoride is added before the filtration process, there is a significant likelihood of low fluoride readings in the final treated water.

This outcome can occur because the filtration process is designed to remove impurities and unwanted contaminants from the water. If fluoride is added before filtration, there is a chance that the filtration medium will capture and remove a portion of the fluoride ions along with other particles. This removal can lead to a decrease in the concentration of fluoride in the water, resulting in lower readings of fluoride in the treated water.

Furthermore, the effectiveness of fluoride can also be counteracted if it is removed alongside other particles or contaminants during the filtration. Therefore, understanding the timing of fluoride addition in relation to filtration is crucial for maintaining appropriate fluoride levels in drinking water. This underlines the importance of carefully considering water treatment practices to ensure that the desired chemical levels are achieved and preserved throughout the treatment process.