Kathryn Hach-Darrow

Kathryn "Kitty" Hach-Darrow (October 20, 1922 – June 4, 2020) was an American businesswoman. She co-founded the Hach Chemical Company in 1947 with her first husband Clifford C. Hach (pronounced hɑ:k). She was CEO of the Hach company.
Hach-Darrow was also the first woman director of the American Water Works Association, an international non-profit working for better water quality. She was known for her philanthropic work.