
Below 15, the level that requires action
3 public water companies list North Stonington as a place they supply. The biggest is Scwa North Stonington Division (Nst), with about 1,860 people. The highest latest result among North Stonington's water companies is 1.1 parts per billion, at Scwa North Stonington Division (Nst). None of the 3 with results was above 15 at its latest test. 2 found too little lead to measure.