Is there lead in Delafield's tap water?
1.2PPBparts per billion of lead in Delafield Square's water at the latest test, from June to September 2025
Under the legal limit of 15 ppb
Under the legal limit of 15 ppb
17 public water companies list Delafield as a place they supply. The biggest is Delafield Square, with about 587 people. The highest latest result among Delafield's water companies is 13.6 parts per billion, at Knollcrest. None of the 17 with results was above 15 at its latest test. 3 found too little lead to measure. Small ones like Wells St Station 435 East supply just their own grounds or street; most of Delafield gets its water from Delafield Square. 16 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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