
Below 15, the level that requires action
12 public water companies list Sumter as a place they supply. The biggest is Sumter City of (Sc4310001), with about 53,070 people. The highest latest result among Sumter's water companies is 11 parts per billion, at Shaw Mobile Home Park (Sc4360012). None of the 12 with results was above 15 at its latest test. 8 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.