Meeting with Sweetwater Representatives at USGS office in San Diego (Denis Bostad)

Summary

• The name of the organism is because the sweet water river 
• It´s a company that desalinates brackish groundwater
• The water supplied is for user supply and agricultural along southwest California
• Area 180.000 km2 - along Chula Vista, Bonita and National City.
• 124 Gallons / day per person
• Two different kinds of desalination methods: Heat and Inverse osmosis.
• The disadvantages of the water desalination method is that consumes a lot of energy –
• Actually the cost decreased 1/3.
• The 20 % of the energy of the state are used for water desalination
• Why do they have to use water desalination?
• During the ´90 increased the population
• During 1900 –1950 water supply was based on Sweet Water Dam, and Love land Dam, although the river flow 3 - 4 months of the year.
• Since 1999 was implemented the osmosis inverse method

Visit to Stream water installation

• Get water from a battery of 6 water wells
• The residual water is sent back through a channel to the river and water supply to 40000 persons.
• They are making research to evaluate what they can do with the salt material

Blog Rapporteur: Miguel Angel Giraut, NC Argentina