
Below 15, the level that requires action
2 public water companies list Denison as a place they supply. The biggest is Denison Water Supply, with about 9,381 people. The highest latest result among Denison's water companies is 1.2 parts per billion, at Denison Water Supply. None of the 2 with results was above 15 at its latest test. 1 found too little lead to measure.