Schematic Diagram

  1. COAGULATION – This involves rapid spinning by adding Aluminum Sulfate (Alum) or Poly Aluminum Chloride (PAC) to water to lump dirt & other solid particles. These lumps are called Flocs, that either float or sink.
  2. FLOCCULATION – Water is slowly mixed by paddles or machines.
  3. SEDIMENTATION – This is where the flocs sink into basin where the lumped dirt is separated from the water.
  4. FILTRATION – This is to separate the remaining sediments from the water. Left-over dirt, algae and harmful bacteria are then removed.
  5. CHLORINATION – Filtered water is treated with chlorine to protect from bacteria, even if it goes to the farthest and highest portion of our distribution network.