An indirect waste must discharge into another fixture at what specific point?

An indirect waste must discharge into another fixture below the flood rim of the receiving fixture. This requirement ensures that the waste does not create a risk of backflow or contamination to the potable water supply or other fixtures. By discharging below the flood rim, the indirect waste is effectively managed and contained, preventing any potential overflow or spillage that could occur if it were positioned at or above the flood rim.

Discharging above the flood rim could result in the waste being able to spill over into the receiving fixture, which can lead to hygiene issues or cross-contamination. Similarly, discharging at the same level as the flood rim could also pose a risk of back-siphonage or overflows, compromising the integrity of the plumbing system. Placing the discharge at the base of the fixture may not allow for proper drainage or ventilation needed for an efficient plumbing system. Therefore, positioning it below the flood rim is critical for both safety and compliance with plumbing codes.