
Below 15, the level that requires action
5 public water companies list Cambridge as a place they supply. The biggest is Breezy Knoll Community, with about 116 people. The highest latest result among Cambridge's water companies is 4.5 parts per billion, at Ripview Court 1. None of the 5 with results was above 15 at its latest test. 4 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.