Cornwall is a city of nearly 50,000 people in Ontario, Canada. It is located on the St. Lawrence River (pictured above), approximately 1,000 miles from the Atlantic Ocean and 125 miles from Lake Ontario. The city draws its drinking water from the St. Lawrence, a reliable and generally good- quality source. However, in the late summer and early fall, dying algae from algae blooms during the warmest months often leave an earthy and m

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