Groundwater Beneath Your Feet Is Rising With the Sea. It Could Bring Long-Buried Toxins With It

Rising seas can evoke images of waves crashing into beachfront property or a torrent of water rolling through downtown streets. But there’s a lesser-known hazard of climate change for those who live along shorelines the world over: freshwater in the ground beneath them creeping slowly upward. For many Bay Area residents who live near the water’s edge, little-publicized research indicates the problem could start to manifest in 10-15 years, particularly in low-lying communities like those in Oakland, Alameda and Marin City.