
Just under 15, the level that requires action
5 public water companies list Rockford as a place they supply. The biggest is Rockford's water department, with about 147,051 people. The highest latest result among Rockford's water companies is 11.8 parts per billion, at Bradley Heights Subdivision. None of the 5 with results was above 15 at its latest test. 2 found too little lead to measure. 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.