Is your house being invaded by invisible, subterranean substances? No, this isn't an X-Files plot. It's something scarier—it's the subject of a recent study on the movement of groundwater toxins. For years, various industries have used a solvent called trichloroethyl-ene for the cleaning of equipment and other jobs. Over time, this sus- pected carcinogen has migrated from industrial dump sites into groundwater.
展开▼
