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 Water Treatment Process
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How is Water Treated?

Water is pumped from Lake Georgetown, approximately nine miles, through two pipelines, 24 and 30 inches in diameter, to the treatment plant.

  1. As the water enters the plant, alum and polymer, which are coagulants, and fluoride are added to the water.
  2. In the flocculation basin, the chemicals are mixed with the water.
  3. The sedimentation basin allows the particulate matter in the water to settle to the bottom.  Clearer water moves on to the next step.  Solids, dirt and debris from the lake water are a byproduct of the treatment process.
  4. After sedimentation, the water is filtered through anthracite coal and is disinfected with chlorine.
  5. Ammonia is added prior to storage so that chlorine byproducts will not form as the water is distributed to the customer.

Daily and Peak Production

Water Plant Production 
   Average Daily Plant Production

 13.578 MGD

   Water Plant Peak Production, July 6, 2005

 27.99 MGD

 Ground Water Production 
   Average Daily Ground Water Production

 3.21 MGD

   Ground Water Peak Production, July 4, 2005

 10.71 MGD

 System Production 
   Average Daily System Production

 16.82 MGD

   Total System Peak Production, July 4, 2005

 37.99 MGD

                                   (MGD = million gallons per day)

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City of Round Rock | 221 East Main Street, Round Rock, Texas 78664 | Phone: (512) 218-5400
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