Macon Municipal Utilities is a public utility company that provides electric, water, wastewater, and natural gas services to the city of Macon, Missouri. Established in 1890, the company is a founding member of the Missouri Public Energy Pool and receives electricity from a diverse resource portfolio. The company's water supply is Long Branch Lake, which it helped develop in the 1970s. MMU also operates a wastewater treatment plant that treats over 1 million gallons of water per day.