The answer to 'how often to drainage system' is that most drainage systems should be inspected and maintained annually. Properly functioning drainage is essential for preventing water damage, erosion, and other issues on your property. Regular maintenance helps ensure your drainage system continues to divert water away from your home's foundation, landscaping, and other critical areas.
During an annual inspection, a landscaping professional will check for blockages, damage, or other problems in your drainage pipes, gutters, downspouts, and other components. They can then perform any necessary cleaning, repairs, or adjustments to keep your drainage system operating at peak efficiency.