John C. Hach

John C. Hach was an influential American chemist and industrialist known for developing practical methods to analyze water quality. He founded Hach Company, which produces testing equipment and tests used worldwide by water treatment facilities, laboratories, and environmental agencies. His work helped improve the safety and cleanliness of drinking water and wastewater management by making water analysis more accurate and accessible. Hach’s innovations have had a lasting impact on public health and environmental protection, ensuring that water quality standards are met efficiently and reliably.