Wash your hands well with soap and warm water for at least 20 seconds.
Drain and rinse beans.
Heat a large skillet over medium heat and cook beef until no longer pink, about 5-10 minutes, stirring to break apart into crumbles. Drain beef and return to skillet.
Stir in beans, chili powder, salsa, uncooked pasta and water. Bring to a boil, reduce heat to low, and simmer for about 15 minutes or until pasta is tender and sauce is slightly thickened, stirring occasionally. Top with shredded cheddar cheese. Serve.