What is the main reason the basement water supply must be properly graded and aligned?

The primary reason for ensuring that the basement water supply is properly graded and aligned is to facilitate effective drainage from the entire system. Proper grading directs the flow of water towards drainage points and away from areas where it could accumulate or cause issues. This ensures that any water in the system can drain efficiently, preventing stagnation and potential water damage or flooding in the basement.

Additionally, when the system is correctly aligned, it allows for easier installation and accessibility of drain valves, which are essential for maintenance and repairs. Regular drainage is crucial to maintaining a healthy environment in the basement, as any trapped water can lead to mold growth and structural damage over time. This focus on the correct alignment and grading can also enhance the overall functionality of the plumbing system.