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Jan De Baat Doelman

Jan De Baat Doelman is the president of Scalewatcher North America Inc. For more information about controlling scale and biofilms in water systems and to see all of the water treatment solutions available from Scalewatcher North America, visit


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Preventing Legionella By Controlling Scale

Legionnaires' disease acquired its name in 1976 when an outbreak of pneumonia occurred among persons attending a convention of the American Legion in Philadelphia.

Scale buildup in water systems promotes the growth of biofilms and creates a breeding ground for harmful bacteria like Legionella pneumophila (L. pneumophila), the fundamental agent of Legionnaires' disease.

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