NEHA Potable Water Practice Exam 2026 – Complete Study Resource

Successful flocculation during water treatment leads to the improvement of water clarity. Flocculation is a process where fine particles and suspended solids in water are agglomerated into larger clusters or "flocs" through the addition of chemical coagulants and gentle mixing. This process makes it easier to remove these particles from the water during subsequent filtration.

As the flocs grow, they are more likely to settle out of the water or be captured by filters, thus reducing turbidity and enhancing clarity. This is a critical step in producing clean and safe drinking water, as high levels of turbidity can harbor pathogens and interfere with disinfection processes. Consequently, one of the primary goals of flocculation is to create clearer water that meets public health standards.