
Below 15, the level that requires action
3 public water companies list Seneca as a place they supply. The biggest is Seneca City of (Sc3710002), with about 39,772 people. The highest latest result among Seneca's water companies is 3 parts per billion, at Seneca City of (Sc3710002). None of the 3 with results was above 15 at its latest test. 2 found too little lead to measure.