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The text of the table follows.

Impurity Common Impurities, Problem Caused
Impurity Oxygen, Problem Caused Corrosion
Impurity Carbon Dioxide, Problem Caused Corrosion
Impurity Bicarbonates (Sodium, Calcium or Magnesium), Problem Caused Scale
Impurity Chlorides or Sulfates (Sodium, Calcium or Magnesium), Problem Caused Scale & Corrosion
Impurity Silica, Problem Caused Scale
Impurity Suspended Solids, Problem Caused Corrosion and Deposition
Impurity Unusually high pH (above 8.5), Problem Caused Mediate Corrosion and Deposition; Alter detergent efficiency
Impurity Unusually low pH (below 5), Problem Caused Mediate Corrosion and Deposition; Alter detergent efficiency
  

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