Watercolour of a small house at dusk, with the water meter cover in the sidewalk out front.

Is there lead in Islip's tap water?

1.2PPBparts per billion of lead in Suffolk County Water Authority's water at the latest test, in tests since 2025

Under the legal limit of 15 ppb

Water companies that supply Islip

3 public water companies list Islip as a place they supply. The biggest is the Suffolk County Water Authority, with about 1,100,000 people. The highest latest result among Islip's water companies is 3.8 parts per billion, at the Saltaire Water District. None of the 3 with results was above 15 at its latest test. Small ones like Saltaire Water District supply just their own grounds or street; most of Islip gets its water from the Suffolk County Water Authority. Your water bill names yours.

The Suffolk County Water Authorityabout 1,100,000 people · latest lead test: 1.2 ppb · 631-563-0258
The Ocean Beach Water Districtabout 4,500 people · latest lead test: 1 ppb · 631-445-4040
The Saltaire Water Districtabout 2,000 people · latest lead test: 3.8 ppb · 631-583-5566

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