
Below 15, the level that requires action
2 public water companies list Wallingford as a place they supply. The biggest is the Wallingford Fire District 1, with about 956 people. The highest latest result among Wallingford's water companies is 4.1 parts per billion, at the Wallingford Fire District 1. None of the 2 with results was above 15 at its latest test. 1 found too little lead to measure.