Ontario posted 7.9% positive today, lowest since April 11.
Western New York posts 4.47% positive, lowest since April 3.
Michigan posts 12.28% positive, lowest since March 26.
That 4.47% for Western NY was the 7-day average. The 1-day today was 3.06%, lowest since April 1.
Lake Erie Testing Chart, Updated 4/21 
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