Grit Removal: Water first flows into the entrance tank from a higher-elevation water source, like an uphill river or stream. Larger objects in the water like sticks, pebbles, leaves, and more are caught by the trash rack or fall due to gravity.
Chemical Dosing: A flotation device measures the elevation of water in the entrance tank, so when the water level rises, the dose of a chemical called coagulant increases. The coagulant allows the particles in the water to become “sticky”.
Flocculation: The water then flows into the flocculator, where it passes through baffles that create disturbances in the water flow, causing the particles to bump and stick to each other and form larger aggregates known as flocs.
Sedimentation: These flocs then travel into the Sedimentation Tank, where some flocs are caught by a bed of fellow flocs, and others hit the Plate Settlers and settle to the bottom.
Filtration: Finally, this clarified water travels into the sand filters, where sand particles provide more surfaces for smaller particles to stick to. Once filtration is complete, clean water is dosed with Chlorine to remove any harmful bacteria and heads into the Distribution Tank, where it can be distributed by gravity to surrounding homes!