The answer to 'why is my sod drainage problems' is that poor soil drainage or compacted soil can cause issues with sod drainage. Symptoms may include standing water, soggy soil, and yellowing or dying grass. Common causes include heavy clay soils, improper grading, or clogged drainage systems.
To fix sod drainage problems, you may need to aerate the soil, improve grading, install drainage pipes or swales, or amend the soil with compost or sand. Smaller DIY projects like core aeration or adding soil amendments can often be done by homeowners, but more extensive drainage work may require hiring a professional landscaper.