Lentil and sausage soup

Ingredients

• ¹/₂ pound sweet Italian sausage (cut into rounds then quartered )
  
• 1 large onion, chopped
  
• 1 stalk celery, finely chopped
  
• 1 tablespoon chopped garlic
  
• 1 ounce (16 ounce) package dry lentils
  
• 1 cup chopped carrot
  
• 8 cups water
  
• 2 (14.5 ounce) cans chicken broth
  
• 1 (28 ounce) can diced tomatoes
  
• 1 tablespoon chopped fresh parsley
  
• 2 bay leaves
  
• ¹/₂ teaspoon dried oregano
  
• ¹/₄ teaspoon dried thyme
  
• ¹/₄ teaspoon dried basil
  
• 1 teaspoon salt, or to taste
  
• ¹/₁ teaspoon black pepper