San Marcos

Olivenhain to start desalinating groundwater with test well

Olivenhain to start desalinating groundwater with test well

Construction starts this month on a $1.5 million test well to show whether desalinated groundwater could supplement the drinking water supply for 86,000 customers of the Olivenhain Municipal Water District.

The district serves parts of Encinitas, Carlsbad, San Diego, San Marcos, Solana Beach and neighboring communities, and relies almost entirely on water imported from the Colorado River and Northern California. Like agencies throughout Southern California, it’s looking for ways to diversify its water supply.

Drilling will begin in about two weeks on a 120-foot-deep well in the San Dieguito River watershed, water district officials said....

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