Sterling Pump Company was established in 1965 by John S. Ruhle. John, together with his wife Doris dedicated their life to developing a business rooted in honesty and integrity. In 1991 John Slizewski joined the company and through their continued training and education and a philosophy built on good old-fashioned hard work, professionalism and customer satisfaction grew to be one of the most well-known and respected pump companies in the Mid-Hudson Valley.