Other Issues That May Cause A Clogged ... the water will accumulate inside the tub. The absence of a clog in the filter or drain hose, along with the presence of standing water in the dishwasher ...

Make sure to evaluate your plumbing before using boiling water to unclog a drain, as it can damage porcelain sinks and PVC piping. The main culprit of bathtub clogs is hair caught under the drain ...