Brackish water

Brackish water is water that has more salinity than fresh water, but not as much as seawater. Salinity expresses the saltiness or dissolved salt content of a body of water. Technically, brackish water contains between 500 and 30,000 ppm salt, usually expressed as 0.05 - 3.0 %.

The concentration of dissolved salts in water partly determines the conductivity when the salt ionises in solution. Electrical conductivity of a water sample is used as an indicator of how salt-free or impurity-free the sample is: the purer the water, the lower the conductivity.

Water salinity based on dissolved salts

• Fresh water
  < 0.05 %
  < 500 ppm
• Brackish water
  0.05 - 3.0 %
  500 - 30,000 ppm
• Saline water
  3.0 - 5.0 %
  30,000 - 50,000 ppm
• Brine
  > 5.0 %
  > 50,000 ppm

Grundfos supplies a broad range of wastewater pumps that match the requirements when pumping the dissolved salt concentrations found in brackish water.