
Below 15, the level that requires action
11 public water companies list Warwick as a place they supply. The biggest is Warwick's water department, with about 6,800 people. The highest latest result among Warwick's water companies is 15.4 parts per billion, at Hillside (Fka Rural Atlantic). 1 of them was above 15 at their latest test. 6 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.