Bring a large pot of salted water to a boil, then cook pasta according to package directions.
While the pasta cooks, heat olive oil in a large frying pan over medium-high heat. Add minced garlic, diced peppers, and diced onion and season with a pinch of salt. Sauté until fragrant, about 1 to 2 minutes.
Add ground sausage to the pan, breaking it up into small pieces with your spatula as you incorporate it with the peppers and onions. Cook until browned, about 7 to 9 minutes.
Next, add the crushed tomatoes and water. Stir in crushed red pepper flakes, basil, and oregano. Bring to a boil, then lower heat and simmer until the sauce thickens slightly, about 8 to 10 minutes.
Drain the cooked pasta, then add the pasta to the sauce. Stir to combine until the pasta is fully coated. Serve immediately.