Well before the ban took effect, the âforever chemicalsâ linked to cancer, birth defects and other serious health problems had tainted drinking-water wells, vegetable roots, beef and milk in Maine.By Sydney CromwellFarmland is everywhere in tiny Unity Township, from neat fields of corn to open cattle pastures. And so are layers of wet organic sludge, a onetime fertilizer that has triggered a crisis over âforever chemicalsâ in central Maine and how best to rid the land of the poisons.