
Under the legal limit of 15 ppb
2 public water companies list Portsmouth as a place they supply. The biggest is Newport-City of, with about 42,155 people. The highest latest result among Portsmouth's water companies is 4.8 parts per billion, at the Portsmouth Water & Fire District. None of the 2 with results was above 15 at its latest test. Small ones like Portsmouth Water & Fire District supply just their own grounds or street; most of Portsmouth gets its water from Newport-City of. Your water bill names yours.
Next: is my pipe lead? · who pays? · which filter?