A.Y. McDonald started his own plumbing business in Dubuque, Iowa, in 1856, and it has remained there under his family's continuous ownership and management for 150 years.

Today the company employs more than 375 people. The company manufactures water works service line brass, plumbing valves and fittings, pumps and water systems, and high pressure gas valves and meter bars.

Fifth generation family members in key leadership roles include: Michael McDonald, president/CEO; Rob McDonald, vice president/sales; Sarah McDonald Hasken, manager of risk management and corporate secretary; and Scott Knapp, director of marketing.

The company is planning several events to celebrate its anniversary with employees, retirees, family members and the Dubuque community. A pictorial history book and video are being developed. In September, a private celebration for employees, retirees and family members will be held, with Jay Leno of The Tonight Show as the headline entertainer.