Safe drinking water is an issue that’s been playing out from Parkersburg, West Virginia to Hoosick Falls, New York. It’s a question many courts are taking on. Among the most recent is in North Alabama, where residents and a water authority are suing 3M, maker of products from Scotchgard to Post-It Notes in connection with toxins in the water supply. The EPA is expected to release new guidelines on safe levels this spring. Meanwhile, the fight is on over who might foot the bill if a cleanup is in order.