Wash your hands well with soap and warm water for at least 20 seconds.
Peel and dice onion.
Rinse and dice bell pepper and celery.
Heat a medium or large pot over medium-high heat, add ground beef, onion, bell pepper, and celery. Stir mixture and cook until beef is no longer pink, about 5 minutes. Drain beef and vegetable mixture and return to the pot.
Add water, rice, paprika, salt, and pepper to the pot and bring to a boil over high heat. Then reduce heat to low, cover, and let simmer until rice is tender and liquid has been absorbed, about 20 minutes.