The answer to 'drainage system mud' is that common causes include poor soil drainage, heavy rainfall, or a blocked or damaged drainage system. Symptoms include standing water, muddy soil, and potentially damage to your lawn or landscaping. Solutions may include improving soil drainage, clearing debris from drains, or installing a new drainage system.
If the issue is minor, such as a clogged drain, you may be able to address it yourself with some basic DIY work. However, for more complex drainage problems or extensive mud and standing water, it's best to call in a professional landscaping or drainage contractor. They can properly assess the issue, identify the root cause, and implement the right solution to prevent further problems.