Is there lead in Smithtown's tap water?
1.2PPBLead in Suffolk County Water Authority's water at the latest test, from 2025 to 2027
Below 15, the level that requires action
Below 15, the level that requires action
3 public water companies list Smithtown as a place they supply. The biggest is the Suffolk County Water Authority, with about 1,100,000 people. The highest latest result among Smithtown's water companies is 1.2 parts per billion, at the Suffolk County Water Authority. None of the 3 with results was above 15 at its latest test.