
Below 15, the level that requires action
2 public water companies list Nantucket as a place they supply. The biggest is Wannacomet Water Company, with about 27,703 people. The highest latest result among Nantucket's water companies is 2 parts per billion, at Wannacomet Water Company. None of the 2 with results was above 15 at its latest test. 1 found too little lead to measure.