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Drinking Water Treatment Process  

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Fort Worth uses surface water from six sources: Lake Worth, Eagle Mountain Lake, Lake Bridgeport, Lake Benbrook, Cedar Creek and Richland-Chambers Reservoirs.  The water is collected and pumped from the lakes to our raw water pump station.  It is then carefully treated to remove harmful organisms and substances. The steps in the treatment process, as required by federal and state regulartions, are outlined below.

  • Chemical Addition
    Chemicals are added to kill germs, improve taste and odor and to help settle solids in the water.  These chemicals are mixed together.
  • Coagulation and Flocculation
    The chemicals cause particles or solids in the water to cling together or coagulate.  As the particles begin to stick and form larger particles, they are referred to as floc, and the process flocculation.
  • Sedimentation
    In this stage, floc particles flow into the sedimentation basin, settle to the bottom and are removed from the water.
     
  • Filtration
    After sedimentation, water flows through filters made of sand, gravel and coal.  These filters remove any remaining particles left in the water.
  • Disinfection
    A small amount of chlorine is added to kill any remaining germs and to keep the water safe as it travels to the public. Fluoride is also added in this step.
  • Clearwell Storage
    Water is placed in a tank to allow time for the chlorine to mix and disinfection to take place.  Water is then pumped into the distribution system through more than 2,400 miles of pipeline.