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

Is there lead in Hillsboro's tap water?

3.2PPBparts per billion of lead in Hillsboro Waterworks's water at the latest test, from June to September 2025

Under the legal limit of 15 ppb

Water companies that supply Hillsboro

2 public water companies list Hillsboro as a place they supply. The biggest is Hillsboro Waterworks, with about 1,325 people. The highest latest result among Hillsboro's water companies is 3.2 parts per billion, at Hillsboro Waterworks. None of the 2 with results was above 15 at its latest test. Small ones like Marell Courts and Rentals LLC supply just their own grounds or street; most of Hillsboro gets its water from Hillsboro Waterworks. Your water bill names yours.

Hillsboro Waterworksabout 1,325 people · latest lead test: 3.2 ppb
Marell Courts and Rentals LLCabout 60 people · latest lead test: 0.6 ppb

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