Brown beef, onion, and green pepper in 6-quart Dutch oven over medium-high 9 minutes, crumbling beef finely, to 160°F. Drain excess fat.
Stir in garlic, paprika, and oregano 30 seconds. Add tomatoes, broth, Worcestershire, bay, salt, and pepper; simmer uncovered 8 minutes.
Add macaroni; steadily simmer uncovered 11 to 14 minutes, stirring every 2 minutes.
Add reserved water gradually if drying before elbows tender. Keep sauce loose enough to flow around pasta.
Remove from heat; discard bay. Rest 3 minutes; divide among 6 bowls.