Is there lead in Derry's tap water?
NO LEADfound in Derry Water Department's water at the latest test, from 2015 to 2017
Too little lead to measure
Too little lead to measure
14 public water companies list Derry as a place they supply. The biggest is the Derry Water Department, with about 17,528 people. The highest latest result among Derry's water companies is 19 parts per billion, at Running Brook. 1 of them was above 15 at their latest test. 1 found too little lead to measure. 12 have no lead test results on file. 11 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.