
Above 15, the level that requires action
4 public water companies list Oak Ridge as a place they supply. The biggest is Knight`S Landing S/D, with about 117 people. The highest latest result among Oak Ridge's water companies is 15.4 parts per billion, at Knight`S Landing S/D. 1 of them was above 15 at their latest test. 3 found too little lead to measure. 3 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.