How do I plan a drainage system to prevent wastewater backups and flooding?

To prevent wastewater backups and flooding, plan the drainage system by ensuring proper slope for pipes to facilitate water flow away from the building. Install backflow prevention devices to stop sewage from entering the building during floods. Utilize sump pumps to remove excess water from basements or low-lying areas. Regular maintenance, such as clearing debris from drains and inspecting pipes for leaks, is also crucial in preventing issues.

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