A district which is organized as an outlet drainage district shall include the term “outlet drainage district” in its name. A district which maintains levees shall include the term “drainage and levee district” in its name. A district which is organized as a mutual drainage district shall include the term “mutual drainage district” in its name, and if such a district also maintains levees it shall include the term “mutual drainage and levee district” in its name. Any other district shall include the term “drainage district” in its name.