Desalination Planning in Multi-Agency Situations

The Pajaro River Watershed in the Monterey Bay region of California flows through some of the most productive agricultural land in the country and in the process, flows across numerous jurisdictional boundaries. In the upper watershed, the groundwater used as potable water has high concentrations of hardness and total dissolved solids. To mitigate the hardness, many potable water customers use water softeners in their homes, which contribute a large salt load to the basin, as a result of wastewater disposal through percolation ponds. Natural groundwater conditions, in conjunction with the salt load from wastewater percolation activities, make this region a prime candidate for implementation of groundwater demineralization projects to address the hardness and total dissolved solids in the potable water.

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