Which parameter would not indicate a water quality problem with direct potential to impact public health?

• A. Tastes and odors
• B. Sediment deposition
• C. Disinfectant decay
• D. Nitrification

Answer: (B)

Sediment deposition is a physical/operational issue in the distribution system rather than a direct indicator of a health risk in the water. It signals where materials are accumulating and where flushing or maintenance may be needed, but by itself it does not guarantee that harmful pathogens or contaminants are present at levels that threaten public health. In contrast, tastes and odors can reflect chemical or biological changes that may indicate contaminants or toxins; disinfectant decay shows the protective residual is dropping, increasing the potential for microbial growth; and nitrification in chloraminated systems directly relates to health concerns because it can form nitrite and reduce disinfection effectiveness.