Long before rising seas wash over San Francisco’s shores and flood its streets, rising groundwater mixed with salt water from the bay could touch and degrade underground structures like sewage lines and building foundations. … That’s the implication of a study released this week by scientists at the University of Hawaii at Manoa. They compiled research from around the globe showing that as sea levels rise, coastal groundwater is lifted closer to the surface while also becoming saltier, more corrosive and potentially more destructive to subterranean systems. … Habel’s publication aligns with a growing body of data from Bay Area researchers and others about the risks posed by rising groundwater as sea levels are projected to rise …

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