What is generally the maximum distance between cleanouts in a drainage system?

In a drainage system, cleanouts are essential for providing access for maintenance and cleaning purposes. The general rule for the maximum distance between cleanouts is established by plumbing codes to ensure that there is adequate access for troubleshooting and clearing any blockages that may occur in the drainage lines.

The maximum distance of 75 feet between cleanouts is based on ensuring that any portion of the drainage system can be easily accessed without excessive length of plumbing being involved. This distance strikes a balance between minimizing the number of cleanouts—thereby reducing costs and complexity—and ensuring that the system remains serviceable. When the cleanout spacing is adhered to, it allows for the effective maintenance of the plumbing system while complying with safety and operational standards.

Distances shorter or longer than this often compromise the ability to effectively maintain the drainage system and may lead to increased difficulty in accessing a cleanout when needed, potentially leading to backlogs or plumbing issues that are harder to address.