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

Is there lead in Hopkinton's tap water?

5PPBparts per billion of lead in Hopkinton Water Department's water at the latest test, in 2025

Under the legal limit of 15 ppb

Water companies that supply Hopkinton

6 public water companies list Hopkinton as a place they supply. The biggest is the Hopkinton Water Department, with about 12,680 people. The highest latest result among Hopkinton's water companies is 13 parts per billion, at Deerfield Estates. None of the 6 with results was above 15 at its latest test. 1 found too little lead to measure. Small ones like Village At Highland Park supply just their own grounds or street; most of Hopkinton gets its water from the Hopkinton Water Department. 5 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well. Your water bill names yours.

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