The Henry P. Thompson Company was established in 1910 and is the oldest such manufacturers' representative firm still doing business in the water and wastewater equipment industry. The company is incorporated in Ohio and occupies beautiful office space in Historic Milford, Ohio, near Cincinnati, Ohio. This is the company's headquarters where most of its administration, customer service, and inside sales staff are located. In order to provide our customers with the most immediate response, we also have a sales office in Indianapolis, Indiana. We provide the very best in clean water solutions by utilizing Lowest Total Cost, Least Risk Solutions of engineered equipment, parts, and service for water and wastewater systems in Ohio, Indiana and Kentucky.