Is there lead in Washington's tap water?
1PPBLead in Rumsey Hall School's water at the latest test, from January to June 2026
Below 15, the level that requires action
Below 15, the level that requires action
8 public water companies list Washington as a place they supply. The biggest is Rumsey Hall School, with about 398 people. The highest latest result among Washington's water companies is 6.5 parts per billion, at the Frederick Gunn School Inc.. None of the 8 with results was above 15 at its latest test. 2 found too little lead to measure. 7 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.