
Below 15, the level that requires action
15 public water companies list Patterson as a place they supply. The biggest is Watchtower Bible Tract Society, with about 1,251 people. The highest latest result among Patterson's water companies is 13.2 parts per billion, at the Quail Ridge Water Works Corp.. None of the 13 with results was above 15 at its latest test. 2 found too little lead to measure. 2 have no lead test results on file. 13 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.