
Under the legal limit of 15 ppb
3 public water companies list Keystone Heights as a place they supply. The biggest is Keystone Postmaster Grid, with about 5,092 people. The highest latest result among Keystone Heights's water companies is 6.1 parts per billion, at Geneva Lake Estates. None of the 3 with results was above 15 at its latest test. 1 found too little lead to measure. Small ones like Lake Geneva MHP supply just their own grounds or street; most of Keystone Heights gets its water from Keystone Postmaster Grid. Your water bill names yours.
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