5.4 Alternative Water Resources: Desalination
5.4.7 Product Water
The quality of desalinated water is generally high, depending on the feed water and technology
used. However, membrane technologies significantly alter the pH of product water, so additional
treatment is warranted before distribution. Primarily this is done to prevent corrosion of
distribution infrastructure, but also to ensure the aesthetic quality of the water. Product water is
then routed to a holding tank where it is polished or treated with chlorine prior to final
distribution. If the product water is treated adequately to prevent corrosion, the additional
required treatment outlined above is the same as that used by the water purveyor to polish or treat
water from other production sources such as well water.
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