
Below 15, the level that requires action
5 public water companies list Ridgeville as a place they supply. The biggest is Lieber Correctional Institute (1870050), with about 1,646 people. The highest latest result among Ridgeville's water companies is 4.7 parts per billion, at Lieber Correctional Institute (1870050). None of the 5 with results was above 15 at its latest test.