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

Is there lead in Janesville's tap water?

2.4PPBparts per billion of lead in Janesville Water Utility's water at the latest test, from January to June 2026

Under the legal limit of 15 ppb

Water companies that supply Janesville

2 public water companies list Janesville as a place they supply. The biggest is the Janesville Water Utility, with about 64,415 people. The highest latest result among Janesville's water companies is 2.4 parts per billion, at the Janesville Water Utility. None of the 2 with results was above 15 at its latest test. 1 found too little lead to measure. Small ones like Caravilla Education and Rehab Center supply just their own grounds or street; most of Janesville gets its water from the Janesville Water Utility. Your water bill names yours.

The Janesville Water Utilityabout 64,415 people · latest lead test: 2.4 ppb
Caravilla Education and Rehab Centerabout 298 people · latest lead test: none found

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