CITY OF MANSFIELD'S UTILITIES DEPARTMENT
The City of Mansfield, Texas owns and operates a "surface water treatment plant". That means that the drinking water that is provided by the City originally comes from lakes and reservoirs.
The "raw" or lake water is delivered to the City of Mansfield via large pipelines that deliver this same water to several other cities throughout the Metroplex.
The City of Mansfield's water treatment plant uses a multiple barrier approach to drinking water treatment. This means that the treatment system has been designed to reduce and eliminate contaminates to levels that have been established by the state and federal government.
The City of Mansfield's water treatment plant consistently produces water of a much higher quality than the rules require. The City's water system has received several awards and is rated as a "Superior Drinking Water System" by the Texas Commission of Environmental Quality.
WATER TREATMENT PROCESS
The pictures below illustrate the water treatment process in general:
As the lake water enters the treatment plant microbes and minerals are reduced with chlorine dioxide. This stage is called pre-oxidation/ disinfection. The quality of the water is monitored during all of the various stages of treatment.
Detailed laboratory analysis accompanied by on-line instruments that constantly monitor specific parameters to insure that that all phases of water treatment are optimized.
One of the primary stages of our water treatment process is mixing coagulants into the lake water as it enters the treatment plant. This stage is called flocculation.
The chemical coagulants, and silt from the lake water are removed in the settling basin. This stage is called sedimentation.
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