What is the significance of measuring TSS in a wastewater sample?

Measuring Total Suspended Solids (TSS) in a wastewater sample is significant primarily because it provides an indication of water clarity and the concentration of particulate matter. TSS includes all solid particles that are suspended in the water column, which can negatively affect aquatic life and water quality. A high TSS level can reduce the penetration of sunlight, limit photosynthesis in aquatic plants, and disrupt the habitats of aquatic organisms.

While TSS measurement does not directly indicate water clarity, it correlates strongly with visual clarity, as higher suspended solids typically result in more turbid water. Turbidity can affect the treatment processes as well, as it can hinder the performance of other biological and physical processes essential for effective wastewater treatment, making TSS a critical parameter in assessing overall water quality.

The other options do not align with the primary purpose of TSS measurement. Assessing pH, evaluating pathogens, and measuring organic nutrients are distinct tests focusing on different aspects of water quality. Thus, B is the answer that correctly captures the importance of measuring TSS.